Perhaps you should try some spelling variations:
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
dua tren » dung tren
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
kem » kiem

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 y nang xa hoi. hieu ve cam luc ((van hanh) or (ban hanh)) kem ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. hieu ve cam luc ((van hanh) OR (ban hanh)) kem ((dua tren) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. hieu ve cam luc ((van hanh) or (ban hanh)) kem ((dua tren) or (cuu tre))*.