Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
trang cua » tranh cua, trung cua, thang cua
trang cho » trong cho, trang o, sang cho
hoc hieu » hoc thieu, hoc hien, doc hieu
tang cua » mang cua, hang cua, tang luan
cong tan » cong tac, cong san, cong thanh
sang tao » hang tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - hanh ((trang cua) or (tang cua)) nhung cong tan ((trang cho) or (sang tao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - hanh ((trang cua) OR (tang cua)) nhung cong tan ((trang cho) OR (sang tao)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - hanh ((trang cua) or (tang cua)) nhung cong tan ((trang cho) or (sang tao))*.