Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va triet » va thiet, va trien, ve triet
sach ky » sach y, sach ty, sach kem
cuu ban » cuu van, cua ban, cuu san
cuc ban » cua ban, cac ban, duc ban
qua cam » qua cham, qua cac, qua ca
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
vai va » mai va, dai va, hai va

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 ky) or (sac ky)) nang xa hoi. hieu qua cam ((cuc ban) OR (cuu ban)) thanh vai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang xa hoi. hieu qua cam ((cuc ban) OR (cuu ban)) thanh vai va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sac ky)) nang xa hoi. hieu qua cam ((cuc ban) OR (cuu ban)) thanh vai va triet*".