Perhaps you should try some spelling variations:
thuat tac » thuat tach, thuat tao, thuat tai
dua tren » dung tren
hanh vai » hanh vi, hanh va, hanh tai
hieu va » lieu va, hieu qua
cua te » cua tu
tuc va » thuc va, truc va, tuc xa
tac ky » tac ke, cac ky, tap ky
suc va » duc va, luc va, soc va
va cao » va cac, va co, va dao
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) OR (tuc va)) hanh vai ((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) OR (tuc va)) hanh vai ((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) OR (tuc va)) hanh vai ((dua tren) or (cua te))*".