Perhaps you should try some spelling variations:
thang duong » thanh duong, thong duong, tang duong
chieu sang » chieu sach, chieu xanh, hieu lang
thien danh » thien anh, thien dang, thien thanh
lang duong » lang dong, lang muong, lang tuong
duong van » duong va, luong va, dang van
qua lang » quan lang, cua lang, dua lang
van van » tan van, san van, van vat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sang) or (thien danh)) - thang duong qua lang duong van van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (thien danh)) - thang duong qua lang duong van van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (thien danh)) - thang duong qua lang duong van van ban*.