Perhaps you should try some spelling variations:
thien van » thi van
hoc cac » hoc cao
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc cac ky nang xa hoi. ((hieu va) or (thien van)) cam xuc ((va hanh) OR (va danh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc cac ky nang xa hoi. ((hieu va) OR (thien van)) cam xuc ((va hanh) OR (va danh)) vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc cac ky nang xa hoi. ((hieu va) or (thien van)) cam xuc ((va hanh) OR (va danh)) vi cua tre*".