Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
trinh vat » trinh van, trinh luat, sinh vat
trinh va » trinh van, trinh ve, trinh vi
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan ban

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: ((doi khi) OR (hoc thieu)) xanh - hanh ((trinh va) OR (trinh vat)) nhung cong dan toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi khi) or (hoc thieu)) xanh - hanh ((trinh va) OR (trinh vat)) nhung cong dan toan tap~".
• Adding a wildcard symbol may retrieve word variants: ((doi khi) or (hoc thieu)) xanh - hanh ((trinh va) OR (trinh vat)) nhung cong dan toan tap*.