Perhaps you should try some spelling variations:
toan hanh » toan thanh, toan anh, tran hanh
thu sach » tu sach, thuat sach, thuoc sach
su sach » so sach, vu sach
vai cua » dai cua, hai cua, lai cua
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va, hieu van
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
ve cam » ve cham, ve cac, va cam
ma hoi » mai hoi, xa hoi, ma hoa
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: ((su sach) or (thu sach)) ky sang ma hoi. hieu ve cam duc ((toan hanh) or (toan doanh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu sach)) ky sang ma hoi. hieu ve cam duc ((toan hanh) OR (toan doanh)) vai cua te.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu sach)) ky sang ma hoi. hieu ve cam duc ((toan hanh) or (toan doanh)) vai cua te*.