Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
hieu van » hieu va, thien van, hieu ve
su sach » so sach
vu sach » vu bach, vu khach
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
vai cua » dai cua, hai cua, lai cua
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) OR (vu sach)) ky lang xa hoi. ((hieu van) or (lieu va)) hac duc gia thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky lang xa hoi. ((hieu van) OR (lieu va)) hac duc gia thanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ky lang xa hoi. ((hieu van) or (lieu va)) hac duc gia thanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) ky lang xa hoi. ((hieu van) or (lieu va)) hac duc gia thanh vai cua te*.