Perhaps you should try some spelling variations:
thieu lang » hieu lang, thieu khang, thieu quang
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
tu sach » thu sach, su sach, tu cach
thuc va » thuc vat, thuc dan, thuc day
van cam » van nam, van lam, van cau
thi van » thi lan, thi hanh, thi nang
lang xa » lang ha, dang xay, lang van
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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

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