Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hanh trang » thanh trung, canh tranh, hanh trinh
hieu lang » chieu sang, nhieu tang, hieu van
trang cua » tranh cua, tang cua, trung cua
cua thong » cua thuong, cua khong, cua tong
thong van » trong van, thong va, thong quan
thanh lap » phan lap, thanh hai, thanh van

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

• Performing a fuzzy search may retrieve terms with similar spellings: nho ((hieu lang) OR (hieu quang)) - hanh trang cua thong thong van ((thanh lap) or (thanh san))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nho ((hieu lang) OR (hieu quang)) - hanh trang cua thong thong van ((thanh lap) OR (thanh san)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "nho ((hieu lang) OR (hieu quang)) - hanh trang cua thong thong van ((thanh lap) or (thanh san))".
• Adding a wildcard symbol may retrieve word variants: nho ((hieu lang) OR (hieu quang)) - hanh trang cua thong thong van ((thanh lap) or (thanh san))*.