Perhaps you should try some spelling variations:
thang duong » thanh duong, thong duong, tang duong
thieu xanh » chieu xanh, hieu manh, thien anh
thien danh » thien anh, thien dang, thien thanh
lang duong » lang dong, lang muong, lang tuong
duong can » duong van, duong san, duong cac
qua lang » quan lang, cua lang, dua lang
can van » cac van, can ban, tan van

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 xanh) or (thien danh)) - thang duong qua lang duong can van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien danh)) - thang duong qua lang duong can van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien danh)) - thang duong qua lang duong can van ban*.