Perhaps you should try some spelling variations:
"te am thuc thuc hanh khong _ trung" » "te am thuc thuc hang khong _ trung", "te am thuc thuc xanh khong _ trung", "te am thuc thuc khanh phong _ trung", "te am hoc thuc hanh khong _ trung", "te cam thuc thuc hanh khong _ trung", "te nam thuc thuc hanh khong _ trung", "ve am thuc thuc hanh khong _ trung"
"te cac thoi thuoc cac phuong he thong" » "te cac phoi thuoc cac phuong he thong", "te cac choi thuc cac phuong he thong", "te cac hoc thuoc cac phuong he thong", "te cac thoi thuoc cac truong he thong", "te cac thoi thuoc cuc phuong he thong", "te cac thoi thuoc cao phuong he thong", "te cac thoi thuoc dac phuong he thong", "te cac thoi thuoc cac phuong te thong", "te cac thoi thuoc cac phuong de thong", "te cac thoi thuoc cac phuong ke thong", "te cac toi thuoc cac phuong he thong", "te cac hop thuoc cac phuong he thong", "te cac tro thuoc cac phuong he thong", "tu cac thoi thuoc cac phuong he thong", "ve cac thoi thuoc cac phuong he thong", "te cao thoi thuoc cac phuong he thong", "te cac thoi thuoc cac phuong he trong"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("te am thuc thuc hanh khong _ trung") or ("te cac thoi thuoc cac phuong he thong"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("te am thuc thuc hanh khong _ trung") OR ("te cac thoi thuoc cac phuong he thong")).
• Removing quotes may allow a broader search: (( te am thuc thuc hanh khong _ trung ) or ( te cac thoi thuoc cac phuong he thong )).
• Adding a wildcard symbol may retrieve word variants: (("te am thuc thuc hanh khong _ trung") or ("te cac thoi thuoc cac phuong he thong"))*.