Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
cau triet » cau trieu, su triet, cua triet
vat thanh » dat thanh, gat thanh, tat thanh
cam thuc » am thuc, nam thuc, cam thu
sach thu » sach thue, sach thieu, sach tham
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, xach tay
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ty) or (sach thu)) nang xa hoi. hieu ve cam thuc vat thanh lai ((cua tre) or (cau triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) nang xa hoi. hieu ve cam thuc vat thanh lai ((cua tre) OR (cau triet)).
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach thu)) nang xa hoi. hieu ve cam thuc vat thanh lai ((cua tre) or (cau triet))*.