Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
ngu phuong » ngu thuong, nhu phuong, ngu chuong
phuong dan » phuong danh, phuong doan, huong dan
lieu tinh » trieu tinh, diep tinh, bien tinh
trung va » truong va, trang va, trung ha
dan phan » doan phan, dan chan, van phan
phan tap » phan lap, han tap, pha tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (lieu tinh)) - hanh trung va ngu phuong dan phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (lieu tinh)) - hanh trung va ngu phuong dan phan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (lieu tinh)) - hanh trung va ngu phuong dan phan tap*.