Perhaps you should try some spelling variations:
te sach » toc sach
ve cham » va cham, ve chat, vu cham
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
soc va » hoc va, loc va, goc va
ma hoi » mai hoi, xa hoi, ma hoa
doc va » duoc va, hoc va, duc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky sang ma hoi. hieu ve cham ((soc va) OR (doc va)) hanh ((ly cua) or (le cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky sang ma hoi. hieu ve cham ((soc va) OR (doc va)) hanh ((ly cua) OR (le cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky sang ma hoi. hieu ve cham ((soc va) OR (doc va)) hanh ((ly cua) or (le cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky sang ma hoi. hieu ve cham ((soc va) OR (doc va)) hanh ((ly cua) or (le cua)) tre*.