Perhaps you should try some spelling variations:
trinh toan » tinh toan, thanh toan, trinh han
mot chieu » doi chieu, ho chieu
trinh van » trinh han, trinh quan, dinh van
dung cong » dung trong
dan thanh » dang thanh, danh thanh, ban thanh
thanh ban » thanh san, thanh van, thanh bac
cong dan » cong san, cong tan, huong dan
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (doi chi)) tinh - hanh ((trinh van) or (trinh toan)) dung cong dan thanh ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doi chi)) tinh - hanh ((trinh van) OR (trinh toan)) dung cong dan thanh ban.
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doi chi)) tinh - hanh ((trinh van) or (trinh toan)) dung cong dan thanh ban*.