Perhaps you should try some spelling variations:
chat luc » chat lua, nhan luc, chat huu
chat xuc » chat huu, cam xuc, chao xu
hieu cao » chieu cao, hieu cac, hieu ca
te sach » toc sach
cuu tre » cua tre, cau tren, cau treo
nang ma » tang ma, sang ma, nang cao
sach v » sach va, sach y, sach 2
va dau » va dao
dau va » dau ve, lau va
va cuu » va cau, va chu, va huu

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 v ((nang ma) or (nang x)) hoi. hieu cao ((chat luc) OR (chat xuc)) va dau va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v ((nang ma) OR (nang x)) hoi. hieu cao ((chat luc) OR (chat xuc)) va dau va cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v ((nang ma) or (nang x)) hoi. hieu cao ((chat luc) OR (chat xuc)) va dau va cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach v ((nang ma) or (nang x)) hoi. hieu cao ((chat luc) OR (chat xuc)) va dau va cuu tre*.