Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
ho chieu » theo chieu, hoc thieu, doi chieu
trung va » truong va, trang va, trung ha
tran van » luan van
dan than » dan chan, ban than, van than
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - thanh ((trung va) or (tran van)) thong cong ((dan than) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((trung va) OR (tran van)) thong cong ((dan than) OR (van tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((trung va) or (tran van)) thong cong ((dan than) or (van tuan)) cau*.