Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trinh van » trinh han, trinh quan, trinh toan
ho chieu » theo chieu, hoc thieu, doi chieu
trinh va » trinh vat, trinh ve, trinh vi
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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 (toc thieu)) xanh - hanh ((trinh va) OR (trinh van)) nhung cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (toc thieu)) xanh - hanh ((trinh va) OR (trinh van)) nhung cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (toc thieu)) xanh - hanh ((trinh va) OR (trinh van)) nhung cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (toc thieu)) xanh - hanh ((trinh va) OR (trinh van)) nhung cong dan toan cao*.