Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh dao » lanh dao, thanh dat, thanh dam
tu sach » thu sach, su sach, te sach
cua tre » cua te, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
cuu tre » cau tren, cau treo
sach tu » sach thu, cach tu, sach ty
cam tuc » cam xuc, cam tu, nam thuc
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano

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 tu nang xa hoi. hieu van ((cam tuc) or (am thuc)) va hanh dao ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu nang xa hoi. hieu van ((cam tuc) OR (am thuc)) va hanh dao ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach tu nang xa hoi. hieu van ((cam tuc) or (am thuc)) va hanh dao ((cua tre) or (cuu tre))*.