Perhaps you should try some spelling variations:
dat trong » dot trong, vat trong, cay trong
sach thi » sach thu, sach tai, sach thieu
thi hang » thi hanh, thi nang, thi hong
hanh tai » thanh tai, hang tai, han tai
cua tre » cua te, cuu tre, cua triet
va hanh » van hanh, va thanh, va danh
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
hang xa » hoang xa, hang va, hang ca
cac xuc » cam xuc, cac nuoc, chat xuc
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: vu sach thi hang xa hoi. ((hieu ve) or (hieu qua)) cac xuc va hanh tai ((cua tre) or (dat trong))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach thi hang xa hoi. ((hieu ve) OR (hieu qua)) cac xuc va hanh tai ((cua tre) OR (dat trong)).
• Adding a wildcard symbol may retrieve word variants: vu sach thi hang xa hoi. ((hieu ve) or (hieu qua)) cac xuc va hanh tai ((cua tre) or (dat trong))*.