Perhaps you should try some spelling variations:
thanh duong » thanh huong, thanh cuong, thanh vuong
theo chieu » theo tieu, theo chu, thi chieu
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
tran tuan » tran xuan, tran quang, tran thanh
ho chieu » hoc thieu, doi chieu, mot chieu
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 (theo chieu)) sach - ((thanh tung) or (thanh duong)) va nhung cong tan tran tuan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - ((thanh tung) OR (thanh duong)) va nhung cong tan tran tuan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) sach - ((thanh tung) or (thanh duong)) va nhung cong tan tran tuan".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) sach - ((thanh tung) or (thanh duong)) va nhung cong tan tran tuan*.