Perhaps you should try some spelling variations:
thanh tuyen » thanh truyen, thanh huyen, hanh tuyen
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, cong tan
dung cong » dung trong
anh nang » ganh nang, anh dang, anh sang
anh bang » anh hoang, anh quang, tinh bang
van dung » van dong, xay dung, tin dung

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 - ((anh nang) or (anh bang)) van dung cong thanh tuyen tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((anh nang) OR (anh bang)) van dung cong thanh tuyen tap.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((anh nang) or (anh bang)) van dung cong thanh tuyen tap*.