Perhaps you should try some spelling variations:
thuat tach » thuat sach, thuat mach, thuat thanh
thuat tac » thuat tao, thuat tai, thuat tam
hanh vai » hanh vi, hanh va, hanh tai
dua tren » dung tren
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cua te » cua tu
suc va » duc va, tuc va, luc va
co suc » cao suc, co su, cong suc
va co » vo co

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 co suc va 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 co suc va 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 co suc va hanh vai ((dua tren) or (cua te))*.