Perhaps you should try some spelling variations:
sach thue » sach thu, sach thieu, sach tham
thue lang » thu hang, thu bang, phu lang
cham thuc » pham thuc, tham thuc, pham thuoc
nham thuc » nhan thuc, nam thuc, nham thu
vat thanh » dat thanh, gat thanh, tat thanh
thanh vai » thanh hai, thanh van, thanh tai
so sach » so sanh, bo sach, co sach
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
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: so sach thue lang xa hoi. hieu ve ((cham thuc) or (nham thuc)) vat thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thue lang xa hoi. hieu ve ((cham thuc) OR (nham thuc)) vat thanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: so sach thue lang xa hoi. hieu ve ((cham thuc) or (nham thuc)) vat thanh vai cua te*.