Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, dua tren
y nang » ky nang, ly nang, v nang
cam tu » cam thu, nam tu, dam tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang xa hoi. ((hieu va) or (hieu qua)) cam tu va hanh di ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. ((hieu va) OR (hieu qua)) cam tu va hanh di ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang xa hoi. ((hieu va) or (hieu qua)) cam tu va hanh di ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. ((hieu va) or (hieu qua)) cam tu va hanh di ((cua tre) OR (cua triet))*.