Perhaps you should try some spelling variations:
hinh thai » sinh thai, tinh thai, dinh thi
toc sach » hoc sach, doc sach, thuoc sach
cao hoi » cau hoi, co hoi, cao hoc
qua cac » cua cac
cac tuc » cac toc, cac tu, cac tac
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
tuc va » thuc va, truc va, tuc xa
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 v nang cao hoi. hieu qua cac tuc va ((hinh thai) or (dung tai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach v nang cao hoi. hieu qua cac tuc va ((hinh thai) OR (dung tai)) cua te.
• Adding a wildcard symbol may retrieve word variants: toc sach v nang cao hoi. hieu qua cac tuc va ((hinh thai) or (dung tai)) cua te*.