Perhaps you should try some spelling variations:
dinh dai » dinh dat, sinh dai, dinh dao
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
truc va » thuc va, thuc vat, trung va
va dinh » van dinh, va kinh, va tinh
va cau » van cau, va cac, va dau
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: thuoc ((cac ky) or (sach ty)) nang xa hoi. hieu va cau truc va dinh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc ((cac ky) OR (sach ty)) nang xa hoi. hieu va cau truc va dinh dai cua te.
• Adding a wildcard symbol may retrieve word variants: thuoc ((cac ky) or (sach ty)) nang xa hoi. hieu va cau truc va dinh dai cua te*.