Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
hieu manh » chieu xanh, hieu nganh, dieu hanh
trang cua » tranh cua, tang cua, thang cua
trung cua » truong cua, trung tuan, trung cap
hoc hieu » hoc thieu, hoc hien, doc hieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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 hieu manh - hanh ((trang cua) or (trung cua)) thuong cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh ((trang cua) OR (trung cua)) thuong cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh ((trang cua) or (trung cua)) thuong cong tac toan cao*.