Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh dai » hanh tai, hanh dao, vanh dai
nhan luc » nang luc
van nhan » van phan, van thanh, danh nhan
dai cuu » dai cua, dai huu
va hanh » van hanh, va thanh, va danh
nang xa » nang x, lang xa, nang ma
sach xa » sach dao, sach nha, sach bai
sach va » sach ha, sach dao, sach nha
cuu tre » cua tre, cau tren, cau treo
sach v » sach y, sach 2, sach vay
luc va » duc va, tuc va, loc 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 v) or (((sach va) OR (sach xa)))) nang xa hoi. hieu van nhan luc va hanh dai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach v) OR (((sach va) OR (sach xa)))) nang xa hoi. hieu van nhan luc va hanh dai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach v) or (((sach va) OR (sach xa)))) nang xa hoi. hieu van nhan luc va hanh dai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach v) or (((sach va) OR (sach xa)))) nang xa hoi. hieu van nhan luc va hanh dai cuu tre*.