Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
luc van » luoc van, luu van, duc van
vai cua » dai cua, hai cua, lai cua
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu va » lieu va, hieu qua
cau luc » cau truc, cau phuc
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 (thu hoach)) ky dang xa hoi. ((hieu van) or (hieu va)) cau luc van hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu hoach)) ky dang xa hoi. ((hieu van) OR (hieu va)) cau luc van hanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu hoach)) ky dang xa hoi. ((hieu van) or (hieu va)) cau luc van hanh vai cua te*.