Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van chao » van chat, van hao, van cho
dinh dai » dinh dat, sinh dai, dinh dao
sach ky » sac ky, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
va dinh » van dinh, va kinh, va tinh
dai cuu » dai cua, dai huu
cuu tre » cua tre, cau tren, cau treo
xu va » xu van, tu va, su va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc ((sach ky) or (sach y)) nang xa hoi. hieu van chao xu va dinh dai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc ((sach ky) OR (sach y)) nang xa hoi. hieu van chao xu va dinh dai cuu tre.
• Adding a wildcard symbol may retrieve word variants: thuoc ((sach ky) or (sach y)) nang xa hoi. hieu van chao xu va dinh dai cuu tre*.