Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trang cua » tranh cua, tang cua, thang cua
trung cua » truong cua, trung tuan, trung cap
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap
chu han » chu van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((ho manh) or (chu han)) - hanh ((trang cua) OR (trung cua)) nhung cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((ho manh) OR (chu han)) - hanh ((trang cua) OR (trung cua)) nhung cong tac toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((ho manh) or (chu han)) - hanh ((trang cua) OR (trung cua)) nhung cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((ho manh) or (chu han)) - hanh ((trang cua) OR (trung cua)) nhung cong tac toan cao*.