Perhaps you should try some spelling variations:
thuat tach » thuat sach, thuat mach, thuat thanh
thuat tac » thuat tao, thuat tai, thuat tam
dua tren » dung tren
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cao suc » cao su, cao duc
suc van » su van, duc van, luc van
va cao » va cac, va co, va dao
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) or (thuat tach)) ky nang xa hoi. hieu va cao suc van hanh vai ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat tac) OR (thuat tach)) ky nang xa hoi. hieu va cao suc van hanh vai ((dua tren) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: ((thuat tac) or (thuat tach)) ky nang xa hoi. hieu va cao suc van hanh vai ((dua tren) or (cua te))*.