Perhaps you should try some spelling variations:
phuc quy » phu quy, phuc vu, hoc quy
cac phuc » cau phuc, khac phuc, cach thuc
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, tu cach
ket cua » ket qua, det cua, keo cua
hieu ve » hieu va
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
te sach » toc sach
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) or (te sach)) ky tang xa hoi. ((hieu ve) or (hieu van)) cac phuc quy dinh ket cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky tang xa hoi. ((hieu ve) OR (hieu van)) cac phuc quy dinh ket cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky tang xa hoi. ((hieu ve) or (hieu van)) cac phuc quy dinh ket cua te*.