Perhaps you should try some spelling variations:
vien nganh » vien thanh
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
hiem ngan » kim ngan, viem gan
hang cong » dang cong, hang nong, bang cong
trang va » tran van
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: hoc ((hiem ngan) or (vien nganh)) - hanh ((trang va) or (hang va)) hang cong thanh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hiem ngan) OR (vien nganh)) - hanh ((trang va) OR (hang va)) hang cong thanh toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((hiem ngan) or (vien nganh)) - hanh ((trang va) or (hang va)) hang cong thanh toan cao*.