Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
ve cham » va cham, ve chat, vu cham
nang ma » tang ma, nang cao, mang may
vai cua » dai cua, hai cua, lai cua
sang ma » tang ma, sang tao, mang may
sach ky » sac ky, sach y, sach ty
luc va » duc va, tuc va, loc va
ve cam » ve cac, va cam, ve cai
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: toc sach ky ((nang ma) or (sang ma)) hoi. hieu ((ve cam) OR (ve cham)) luc va thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky ((nang ma) OR (sang ma)) hoi. hieu ((ve cam) OR (ve cham)) luc va thanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky ((nang ma) or (sang ma)) hoi. hieu ((ve cam) OR (ve cham)) luc va thanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ky ((nang ma) or (sang ma)) hoi. hieu ((ve cam) OR (ve cham)) luc va thanh vai cua te*.