Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, mot chieu
hanh tang » hanh trang, anh tang, hanh mang
ho chieu » hoc thieu, mot chieu, thi chieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban
tang va » trang va, tang van, thang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (((ho chieu) OR (doi chieu)))) xanh - hanh tang va nhung cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (((ho chieu) OR (doi chieu)))) xanh - hanh tang va nhung cong tac toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (((ho chieu) OR (doi chieu)))) xanh - hanh tang va nhung cong tac toan ban".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (((ho chieu) OR (doi chieu)))) xanh - hanh tang va nhung cong tac toan ban*.