Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, hieu ve
cac cuoc » cac nuoc, ca cuoc, cac quoc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
cac cua » cach cua, cac qua, ca cua
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: tu sach ky dang xa hoi. ((hieu van) OR (lieu va)) ((cac cuoc) or (cac cua)) ban thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang xa hoi. ((hieu van) OR (lieu va)) ((cac cuoc) OR (cac cua)) ban thanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky dang xa hoi. ((hieu van) OR (lieu va)) ((cac cuoc) or (cac cua)) ban thanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang xa hoi. ((hieu van) OR (lieu va)) ((cac cuoc) or (cac cua)) ban thanh vai cua te*.