Perhaps you should try some spelling variations:
tmanh trung » thanh trung, thanh tung, manh tung
thanh nhung » thanh hung, hanh nhung, tranh nhung
manh trung » manh tung, thanh trung, manh hung
nhung cong » dung cong, thong cong, hang cong
theo sach » thuoc sach, te sach, theo lich
hieu cach » hieu cac, chieu sach, hieu ca
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((theo sach) or (hieu cach)) - ((manh trung) or (tmanh trung)) thanh nhung cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((theo sach) OR (hieu cach)) - ((manh trung) OR (tmanh trung)) thanh nhung cong tan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((theo sach) or (hieu cach)) - ((manh trung) or (tmanh trung)) thanh nhung cong tan toan ban*.