Perhaps you should try some spelling variations:
dinh doi » dinh moi, tinh doi, dinh toi
hieu va » lieu va, hieu qua
doi cua » dai cua, hoi cua
va dinh » van dinh, va kinh, va tinh
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, cua triet
sach ty » sach tu, sach thu, xach tay
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma

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 ty) or (sach y)) nang xa hoi. ((hieu ve) OR (hieu va)) cam duc va dinh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach y)) nang xa hoi. ((hieu ve) OR (hieu va)) cam duc va dinh doi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) or (sach y)) nang xa hoi. ((hieu ve) OR (hieu va)) cam duc va dinh doi cua tre*".