Perhaps you should try some spelling variations:
trinh thiet » trinh viet
nhung cong » dung cong, thong cong, hang cong
mot chieu » ho chieu
doi chieu » doc hieu, doi chi, ho chieu
trinh thi » trinh tai, dinh thi, trinh tu
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
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: ((mot chieu) or (doi chieu)) xanh - hanh ((trinh thiet) or (trinh thi)) nhung cong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doi chieu)) xanh - hanh ((trinh thiet) OR (trinh thi)) nhung cong van toan cao.
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doi chieu)) xanh - hanh ((trinh thiet) or (trinh thi)) nhung cong van toan cao*.