Perhaps you should try some spelling variations:
tranh thuat » trong thuat, tranh chua, tranh thai
thuat hung » thuat dung, thuat ung, thuat xung
hung cong » nhung cong, hung cuong, phung cong
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
cong dan » cong san, cong tan, huong dan
than cao » toan cao, thai cao, than cap
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sach - canh tranh thuat hung cong dan ((than cao) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - canh tranh thuat hung cong dan ((than cao) OR (khan cap)).
• Adding a wildcard symbol may retrieve word variants: theo chu sach - canh tranh thuat hung cong dan ((than cao) or (khan cap))*.