Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
van thong » van thuong, van phong, va thong
ho chieu » theo chieu, doi chieu, mot chieu
cong dan » cong san, cong tan, huong dan
toan cao » toan ban, toan tap
san van » tan van, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (hoc thieu)) xanh - thanh san van thong cong dan ((toan cao) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - thanh san van thong cong dan ((toan cao) OR (van ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) xanh - thanh san van thong cong dan ((toan cao) or (van ban))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) xanh - thanh san van thong cong dan ((toan cao) or (van ban))*.