Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
chieu sang » chieu sach, chieu xanh, hieu lang
nhung cong » dung cong, thong cong, hang cong
hieu van » hieu va, thien van, lieu va
thang tu » thong tu, thanh tu, hang tu
tu nhung » tu chung, cua nhung, thi nhung
cong tac » cong ty
tac dan » tac danh, cac dan, tac da

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chieu sang) OR (hieu van)) - thanh thang tu nhung cong tac dan ca~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((chieu sang) OR (hieu van)) - thanh thang tu nhung cong tac dan ca".
• Adding a wildcard symbol may retrieve word variants: doc ((chieu sang) OR (hieu van)) - thanh thang tu nhung cong tac dan ca*.