Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
tung tuan » trung tuan, hung tuan, quang tuan
tuan bang » tuan dang, tuan hoang, thuat bang
bang nong » hang nong, bang song, bang cong
nong tan » cong tan, nong dan, nong san

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sach - thanh tung tuan bang nong tan ((thanh ngu) or (thanh san))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - thanh tung tuan bang nong tan ((thanh ngu) OR (thanh san)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh tung tuan bang nong tan ((thanh ngu) or (thanh san))*.