Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
hieu van » hieu va, thien van, hieu ve
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hac duc » hoc duc, ha duc, thach duc
duc gia » quoc gia
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 ky lang xa hoi. ((hieu van) or (lieu va)) hac duc gia thanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky lang xa hoi. ((hieu van) OR (lieu va)) hac duc gia thanh dai cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ky lang xa hoi. ((hieu van) or (lieu va)) hac duc gia thanh dai cua te*.