Perhaps you should try some spelling variations:
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
toc sac » toc sach, toc san, hoc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
lam xuc » cam xuc, lam duoc
sac ky » cac ky, sai ky
va lam » van lam, va lap
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sac ky nang xa hoi. hieu va lam xuc ((van hanh) or (ban hanh)) tri ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sac ky nang xa hoi. hieu va lam xuc ((van hanh) OR (ban hanh)) tri ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: toc sac ky nang xa hoi. hieu va lam xuc ((van hanh) or (ban hanh)) tri ((cua te) or (cua tu))*.