Perhaps you should try some spelling variations:
thieu quang » thien quan, trien quang, hieu quan
hieu quang » hieu quan, diep quang, huu quang
hanh tran » hanh trang, thanh tran, hanh tram
tac thanh » bac thanh, cac thanh, tcc thanh
thanh cau » thanh chau, thanh mau, nhanh cau
tran van » luan van
ban cong » bang cong, van cong, phan cong
cong tac » cong ty

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((((hieu quang) OR (thieu quang))) or (hieu qua)) - hanh tran van ban cong tac thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((hieu quang) OR (thieu quang))) OR (hieu qua)) - hanh tran van ban cong tac thanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((((hieu quang) OR (thieu quang))) or (hieu qua)) - hanh tran van ban cong tac thanh cau".
• Adding a wildcard symbol may retrieve word variants: ho ((((hieu quang) OR (thieu quang))) or (hieu qua)) - hanh tran van ban cong tac thanh cau*.