Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
canh trinh » canh tranh, hanh trinh, canh tinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hoc hieu » hoc thieu, hoc hien, doc hieu
trinh va » trinh van, trinh vat, trinh ve
va thong » va thuong, va phuong, he thong
dan phan » doan phan, dan chan, van phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - canh trinh va thong cong ((dan phan) or (dan ca)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh trinh va thong cong ((dan phan) OR (dan ca)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh trinh va thong cong ((dan phan) or (dan ca)) cau*.