Perhaps you should try some spelling variations:
thanh chau » thanh cha, thanh cham, thanh chu
hieu manh » chieu xanh, hieu nganh, dieu hanh
nang cong » nang song, dang cong, bang cong
hoc hieu » hoc thieu, hoc hien, doc hieu
trang va » tran van
cong dan » cong san, cong tan, huong dan
phan cau » phan dau, phan cac, phan tu

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 manh - hanh ((trang va) OR (hang va)) nang cong dan ((thanh chau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh ((trang va) OR (hang va)) nang cong dan ((thanh chau) OR (phan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - hanh ((trang va) OR (hang va)) nang cong dan ((thanh chau) or (phan cau))".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh ((trang va) OR (hang va)) nang cong dan ((thanh chau) or (phan cau))*.