Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung pham » trung phan, tung pham, trung phat
pham trong » pham thuong, pham cong, nam trong
nhan chung » nha chung, phan chung, nhanh chuong
ho chieu » theo chieu, hoc thieu, doi chieu
cong ban » cong bang, cong san, cong dan
cong tan » cong tac, cong san, cong thanh

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 (mot chieu)) sach - thanh trung pham trong ((cong ban) OR (cong tan)) nhan chung~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (mot chieu)) sach - thanh trung pham trong ((cong ban) OR (cong tan)) nhan chung.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (mot chieu)) sach - thanh trung pham trong ((cong ban) OR (cong tan)) nhan chung".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (mot chieu)) sach - thanh trung pham trong ((cong ban) OR (cong tan)) nhan chung*.