Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
toc sach » hoc sach, thuoc sach, nuoc sach
doc sach » hoc sach, nuoc sach, dac sac
vai cua » dai cua, hai cua, lai cua
ky dang » ky nang, ky danh
dang ma » dang mau, dang mam, dang mat
hieu ve » hieu va, hieu van
loc va » hoc va
ve cam » ve cham, ve cac, va cam
luc va » duc va, tuc va
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: ((toc sach) OR (doc sach)) ky dang ma hoi. hieu ve cam ((luc va) or (loc va)) thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) ky dang ma hoi. hieu ve cam ((luc va) OR (loc va)) thanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (doc sach)) ky dang ma hoi. hieu ve cam ((luc va) or (loc va)) thanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (doc sach)) ky dang ma hoi. hieu ve cam ((luc va) or (loc va)) thanh vai cua te*.