Perhaps you should try some spelling variations:
thuat tac » thuat tach, thuat tao, thuat tai
hanh tai » thanh tai, hang tai, han tai
dua tren » dung tren
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cao suc » cao su, cao duc
va hanh » van hanh, va thanh, va danh
tac ky » tac ke, cac ky, tap ky
va cao » va cac, va co, va dao
suc va » duc va, tuc va, luc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat tac ky nang xa hoi. hieu va cao suc va hanh tai ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat tac ky nang xa hoi. hieu va cao suc va hanh tai ((dua tren) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: thuat tac ky nang xa hoi. hieu va cao suc va hanh tai ((dua tren) or (cua te))*.