Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
va triet » va thiet, va trien, ve triet
hanh tai » hang tai, han tai, hinh tai
sach ky » sac ky, sach y, sach ty
su sach » so sach, vu sach
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
cam tu » cam thu, nam tu, dam tu
ma hoi » mai hoi, xa hoi, ma hoa

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 ky tang ma hoi. hieu qua ((cam tu) or (cam xuc)) va ((hanh tai) OR (thanh tai)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky tang ma hoi. hieu qua ((cam tu) OR (cam xuc)) va ((hanh tai) OR (thanh tai)) va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky tang ma hoi. hieu qua ((cam tu) or (cam xuc)) va ((hanh tai) OR (thanh tai)) va triet*".