Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu tinh » trieu tinh, lieu tinh, chau tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
manh tung » manh hung, thanh tung
cua nhung » va nhung
tung cua » trung cua, tuong cua, dung cua
cong tan » cong tac, cong san, cong thanh
toan tai » toan tap, doanh tai, von tai
toan cao » toan tap
toan ban » van 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: hoc chieu tinh - manh tung cua nhung cong tan ((((toan tai) OR (toan cao))) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - manh tung cua nhung cong tan ((((toan tai) or (toan cao))) or (toan ban))*.