Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
long van » luong van, song van, lang van
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
doi chi » doi khi
chi anh » chi danh, chi hanh, thi anh
long va » luong va, blong va, dong va

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi anh - nhanh ((long va) or (long van)) thuong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi anh - nhanh ((long va) OR (long van)) thuong cong tac toan cau*.