Perhaps you should try some spelling variations:
trinh cong » trinh dung
hoc thieu » toc thieu, hoc hien
dang hanh » dang thanh, ban hanh, dang van
qua trinh » qua kinh
van thanh » ban thanh, van tuan
ho chieu » theo chieu, doi chieu, mot chieu
hanh qua » thanh qua, hanh sua, hanh cua
dan toan » van toan, dan than, manh toan

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

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