Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
thieu sang » chieu sang, thieu khang, hieu lang
dong thanh » truong thanh
vung dong » cong dong
anh tang » anh bang, anh dang, anh nang
tang van » dang van, hoang van, trong van
van vung » van vuong, van dung, van hung
toan tai » toan tap, doanh tai, toan ban
tuan tai » quan tai, tan tai, tuan tuoi

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 sang) OR (thieu quang)) - anh tang van vung dong thanh ((toan tai) or (tuan tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (thieu quang)) - anh tang van vung dong thanh ((toan tai) OR (tuan tai)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sang) OR (thieu quang)) - anh tang van vung dong thanh ((toan tai) or (tuan tai))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) OR (thieu quang)) - anh tang van vung dong thanh ((toan tai) or (tuan tai))*.