Perhaps you should try some spelling variations:
thieu bang » thien bang, thieu khang, thieu quang
thu sach » thuat sach, thuoc sach, thu hoach
hanh lai » hanh lam, hanh tai, thanh lap
thuc dan » thuc hanh, hoc dan, thuc vat
lai cua » dai cua, hai cua, lai chau
van cam » van nam, van lam, van cau
thi van » thi lan, thi hanh, thi nang
bang xa » lang xa, bang va, mang xa
tu sach » su sach, te sach, tu cach
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) OR (tu sach)) thieu bang xa hoi. thi van cam ((duc va) or (thuc dan)) hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) thieu bang xa hoi. thi van cam ((duc va) OR (thuc dan)) hanh lai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) thieu bang xa hoi. thi van cam ((duc va) or (thuc dan)) hanh lai cua tre*".