Perhaps you should try some spelling variations:
thuat sac » thuat sach, thuat san, thuat tac
hanh vai » hanh vi, hanh va, hanh tai
dua tren » dung tren
nang xa » nang x, lang xa, nang ma
hieu va » hieu qua
va hanh » van hanh, va thanh, va danh
sac ky » cac ky, sai ky
soc va » hoc va, loc va, doc va
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 sac ky nang xa hoi. ((hieu va) OR (lieu va)) cham soc va hanh vai ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sac ky nang xa hoi. ((hieu va) OR (lieu va)) cham soc va hanh vai ((dua tren) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sac ky nang xa hoi. ((hieu va) OR (lieu va)) cham soc va hanh vai ((dua tren) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: thuat sac ky nang xa hoi. ((hieu va) OR (lieu va)) cham soc va hanh vai ((dua tren) or (cua te))*.