Perhaps you should try some spelling variations:
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
doc hieu » toc thieu, hoc hien
tac than » tac thanh, tam than, bac thanh
tac nhan » tao nhan, cac nhan, dac nhan
tung va » trung va, tuong va, dung va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (hoc thieu)) sach - thanh tung va nhung cong ((tac than) or (tac nhan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc thieu)) sach - thanh tung va nhung cong ((tac than) OR (tac nhan)) cau.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc thieu)) sach - thanh tung va nhung cong ((tac than) or (tac nhan)) cau*.