Perhaps you should try some spelling variations:
thuat sac » thuat sach, thuat san, thuat tac
ve triet » va trien, su triet
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
dan vai » dan va, dan tai, dan vat
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
ve cac » va cac, vien cac
xac va » tac va, ac va, bac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sac ky nang xa hoi. hieu ve cac ((xac va) or (duc va)) dan vai ((cua tre) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sac ky nang xa hoi. hieu ve cac ((xac va) OR (duc va)) dan vai ((cua tre) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: thuat sac ky nang xa hoi. hieu ve cac ((xac va) or (duc va)) dan vai ((cua tre) or (ve triet))*.