Perhaps you should try some spelling variations:
nhanh thanh » phan thanh, nhanh tinh
thong trinh » thong tinh, chuong trinh, phuong trinh
hieu quang » thieu quang, hieu qua, diep quang
hieu lang » chieu sang, nhieu tang, hieu van
hieu quan » hieu qua, lieu quan, thien quan
thanh cua » tranh cua, than cua, hanh cua
cua thong » cua thuong, cua khong, cua tong
trinh han » trinh quan
han dau » hang dau, phan dau, van dau

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 lang) or (((hieu quang) OR (hieu quan)))) - nhanh thanh cua thong thong trinh han dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (((hieu quang) OR (hieu quan)))) - nhanh thanh cua thong thong trinh han dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (((hieu quang) OR (hieu quan)))) - nhanh thanh cua thong thong trinh han dau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (((hieu quang) OR (hieu quan)))) - nhanh thanh cua thong thong trinh han dau*.