Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc thieu » toc thieu, hoc hien
cong doan » cong dan, cong hoan, dong doanh
doan phan » doanh phan, toan phan, dan phan
ho chieu » theo chieu, doi chieu, mot chieu
phan dau » phan tu, hang dau
va hang » van hang, va nang, va hanh
va lang » va nang, hoa lang

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 - thanh trung ((va hang) or (va lang)) cong doan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - thanh trung ((va hang) OR (va lang)) cong doan phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) sach - thanh trung ((va hang) or (va lang)) cong doan phan dau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) sach - thanh trung ((va hang) or (va lang)) cong doan phan dau*.