Perhaps you should try some spelling variations:
dinh dat » dinh ket, dinh van, dinh lam
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
cac thu » cach thuc, cac thoi
dat cua » dai cua, day cua, mat cua
kinh ky » minh ky, trinh ky, kinh tay
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
va dinh » van dinh, va kinh, va tinh
sinh y » sinh ly
thu va » thuc va, thue va, tu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((sinh y) or (kinh ky)) nang xa hoi. ((hieu ve) OR (hieu van)) cac thu va dinh dat cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((sinh y) OR (kinh ky)) nang xa hoi. ((hieu ve) OR (hieu van)) cac thu va dinh dat cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((sinh y) or (kinh ky)) nang xa hoi. ((hieu ve) OR (hieu van)) cac thu va dinh dat cua tre".
• Adding a wildcard symbol may retrieve word variants: hoc ((sinh y) or (kinh ky)) nang xa hoi. ((hieu ve) OR (hieu van)) cac thu va dinh dat cua tre*.