Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
doanh cua » doanh luan
tong cong » trong cong, cong cong, dung cong
ho chieu » theo chieu, doi chieu, mot chieu
manh cua » ban cua
cong tan » cong tac, cong san, cong thanh
tan khan » tan khang, tan nhan, toan khoan
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc thieu)) sach - hanh ((manh cua) or (doanh cua)) tong cong tan khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - hanh ((manh cua) OR (doanh cua)) tong cong tan khan cap.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) sach - hanh ((manh cua) or (doanh cua)) tong cong tan khan cap*.