Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thanh vi » thanh va, thanh ve, nhanh vi
sach ky » sac ky, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
nam luc » nang luc, nhan luc, nam thuc
luc van » luoc van, luu van, duc van
cuu tre » cua tre, cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ky) OR (sach y)) nang xa hoi. hieu van nam luc van ((thanh vi) or (hanh vi)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach y)) nang xa hoi. hieu van nam luc van ((thanh vi) OR (hanh vi)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) OR (sach y)) nang xa hoi. hieu van nam luc van ((thanh vi) or (hanh vi)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) OR (sach y)) nang xa hoi. hieu van nam luc van ((thanh vi) or (hanh vi)) cuu tre*.