Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
sach thu » sach thue, sach thieu, sach tham
xach tay » canh tay
dai cuu » dai cua, dai huu
va hanh » van hanh, va thanh, va danh
hieu va » hieu qua
cuu tre » cua tre, cau tren, cau treo
nang xa » nang x, lang xa, nang ma
soc va » hoc va, loc va, doc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((xach tay) or (sach thu)) nang xa hoi. ((hieu va) OR (lieu va)) cham soc va hanh dai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((xach tay) OR (sach thu)) nang xa hoi. ((hieu va) OR (lieu va)) cham soc va hanh dai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((xach tay) or (sach thu)) nang xa hoi. ((hieu va) OR (lieu va)) cham soc va hanh dai cuu tre*".