Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu viec » nhieu viec, hieu ve, sieu viet
vu khach » vu khanh, vay khach, cua khach
viec cac » vien cac, viec cua, viec lam
minh dai » minh dao, sinh dai, minh hai
vu sach » vu bach, su sach
vu khac » vu kham, vu khanh, bui khac
cac duc » cac du, cao duc, cac dac
duc van » duc va, duc tan, duc manh
ky van » ly van, ty van, ky va
van xa » van xay, van ha, dan xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (((vu khach) OR (vu khac)))) ky van xa hoi. hieu viec cac duc van minh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (((vu khach) OR (vu khac)))) ky van xa hoi. hieu viec cac duc van minh dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (((vu khach) OR (vu khac)))) ky van xa hoi. hieu viec cac duc van minh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (((vu khach) OR (vu khac)))) ky van xa hoi. hieu viec cac duc van minh dai cua triet*.