Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
hanh dang » anh dang, hanh dung, hanh mang
hanh dong » anh dong, ha dong
dung dung » ung dung, dung ung, dung dong
dung cong » dung trong
ho chieu » theo chieu, doi chieu, mot chieu
cong van » cong vang, cong san, song van
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: ((ho chieu) or (hoc thieu)) xanh - ((hanh dang) OR (hanh dong)) dung dung cong van van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - ((hanh dang) OR (hanh dong)) dung dung cong van van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) xanh - ((hanh dang) OR (hanh dong)) dung dung cong van van ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) xanh - ((hanh dang) OR (hanh dong)) dung dung cong van van ban*.