Perhaps you should try some spelling variations:
danh thanh » dinh thanh, dang thanh, nhanh thanh
thanh vai » thanh hai, thanh van, thanh tai
cau sach » cao sach, rau sach, khau sach
hau sach » khau sach, ham sach, rau sach
su cach » su sach, su cac, cuu cach
vai cua » dai cua, hai cua, lai cua
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano
tu cach » tu cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su cach) or (tu cach)) tu nang xa hoi. lieu va ((hau sach) OR (cau sach)) danh thanh vai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cach) OR (tu cach)) tu nang xa hoi. lieu va ((hau sach) OR (cau sach)) danh thanh vai cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su cach) or (tu cach)) tu nang xa hoi. lieu va ((hau sach) OR (cau sach)) danh thanh vai cua vat".
• Adding a wildcard symbol may retrieve word variants: ((su cach) or (tu cach)) tu nang xa hoi. lieu va ((hau sach) OR (cau sach)) danh thanh vai cua vat*.