Perhaps you should try some spelling variations:
thuat tac » thuat tach, thuat tao, thuat tai
hanh vai » hanh vi, hanh tai, hanh van
dua tren » dung tren
hanh va » hang va, hanh vi
hieu va » lieu va, hieu qua
cao suc » cao su, cao duc
suc va » duc va, tuc va, luc va
tac ky » tac ke, cac ky, tap ky
va cao » va cac, va co, va dao
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu va cao suc va ((hanh vai) OR (hanh va)) ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat tac ky nang x hoi. hieu va cao suc va ((hanh vai) OR (hanh va)) ((dua tren) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat tac ky nang x hoi. hieu va cao suc va ((hanh vai) OR (hanh va)) ((dua tren) or (cua te))*".