Perhaps you should try some spelling variations:
tranh cua » doanh cua
hang cong » dang cong, hang nong, bang cong
theo chu » theo chieu, cho chu, chao chu
manh cua » doanh cua, ban cua
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » 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: ((theo chu) or (doi khi)) xanh - canh ((tranh cua) or (manh cua)) hang cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chu) OR (doi khi)) xanh - canh ((tranh cua) OR (manh cua)) hang cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ((theo chu) or (doi khi)) xanh - canh ((tranh cua) or (manh cua)) hang cong tac toan cau*.