Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhieu tang » chieu sang, hieu lang, nhiet nang
hanh trang » thanh trung, canh tranh, hanh trinh
dung cong » dung trong
trang am » trang lam, trang cham, trang anh
van toan » van tan, van thanh, manh toan
van tuan » van quan, van ban, anh tuan
am dung » am duong, lam dung, ap dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sach) or (nhieu tang)) - hanh trang am dung cong ((van toan) or (van tuan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (nhieu tang)) - hanh trang am dung cong ((van toan) OR (van tuan)) tap.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (nhieu tang)) - hanh trang am dung cong ((van toan) or (van tuan)) tap*.