Perhaps you should try some spelling variations:
tham nang » nham nang, tham lang, tham nhung
nam thuc » nam thuoc, nam thu, nam tu
thanh ha » thanh hoa, thanh hai, nhanh ha
da thanh » dao thanh, dat thanh, dam thanh
su sach » so sach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
vu sach » vu bach, vu khach
cuu tre » cua tre, cau tren, cau treo
ha cuu » ho cuu, cham cuu, khao cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) OR (vu sach)) tham nang xa hoi. hieu ve ((nam thuc) or (am thuc)) da thanh ha cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) tham nang xa hoi. hieu ve ((nam thuc) OR (am thuc)) da thanh ha cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) tham nang xa hoi. hieu ve ((nam thuc) or (am thuc)) da thanh ha cuu tre*".