Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
thanh tung » thanh cong
tuan thong » toan thong, tran thong, tuan phong
cong ngang » cong nhan, cong quang, cong nong
hieu lang » chieu sang, nhieu tang, hieu van
tung tuan » trung tuan, hung tuan, quang tuan
cong lang » cong vang, cong luong, cong quang
than cap » khan cap, thanh lap, thanh cac

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