Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
hang duong » hoang duong, han duong, hang luong
hieu lang » chieu sang, hieu quang, nhieu tang
tinh ninh » ninh binh
duong anh » duong manh, duong xanh, duong vanh
tuan ban » tuan bang, luan ban, quang ban
toan ban » van ban
ninh va » tinh va, sinh va, minh va
va hang » van hang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu quang) or (hieu lang)) - tinh ninh va hang duong anh ((tuan ban) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu quang) OR (hieu lang)) - tinh ninh va hang duong anh ((tuan ban) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu quang) or (hieu lang)) - tinh ninh va hang duong anh ((tuan ban) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu quang) or (hieu lang)) - tinh ninh va hang duong anh ((tuan ban) OR (toan ban))*.