Perhaps you should try some spelling variations:
thuat sac » thuat sach, thuat san, thuat tac
van hanh » van thanh, ban hanh, van anh
dua tren » dung tren
hieu va » lieu va, hieu qua
cam luc » cau luc
sac ky » cac ky, sai ky
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 sac ky nang x hoi. hieu va ((cam luc) or (cam xuc)) van hanh vi ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sac ky nang x hoi. hieu va ((cam luc) OR (cam xuc)) van hanh vi ((dua tren) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: thuat sac ky nang x hoi. hieu va ((cam luc) or (cam xuc)) van hanh vi ((dua tren) or (cua te))*.