Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
hieu van » thien van, lieu va, hieu ve
van dang » van dong, van dung, van nang
thai cua » than cua, tai cuc, tri cua
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va dang » va nang, va lang, da dang
san ky » sang ky, van ky, dan ky
cua te » cua tu
nuoc » quoc, duoc, ngoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat san ky nang xa hoi. ((hieu van) OR (hieu va)) hoc nuoc ((va dang) or (van dang)) thai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat san ky nang xa hoi. ((hieu van) OR (hieu va)) hoc nuoc ((va dang) OR (van dang)) thai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat san ky nang xa hoi. ((hieu van) OR (hieu va)) hoc nuoc ((va dang) or (van dang)) thai cua te".
• Adding a wildcard symbol may retrieve word variants: thuat san ky nang xa hoi. ((hieu van) OR (hieu va)) hoc nuoc ((va dang) or (van dang)) thai cua te*.