Perhaps you should try some spelling variations:
nhan truc » nhan thuc, nhanh thuc, nhan trung
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » thien van, lieu va, hieu ve
truc may » tren may, truc va
tinh bai » tinh bac, tinh hai, hinh bai
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
bai cuu » bai cua, bai cung
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: hoc sach ky nang xa hoi. ((hieu va) or (hieu van)) nhan truc may tinh bai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky nang xa hoi. ((hieu va) OR (hieu van)) nhan truc may tinh bai cuu tre.
• Adding a wildcard symbol may retrieve word variants: hoc sach ky nang xa hoi. ((hieu va) or (hieu van)) nhan truc may tinh bai cuu tre*.