Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
cua triet » cua viet, su triet, va triet
van lanh » van anh, van hanh, van manh
viec cac » vien cac, viec cua, viec lam
nang tay » nang tai, nang tao, bang tay
dao cua » dai cua, day cua, dan cua
duc van » duc va, duc tan, duc manh
cac duc » cac du, cao duc, cac dac
so sach » so sanh, bo sach, co sach
vu sach » vu bach, vu khach
tay hoi » tay ho, tao hoi, tay thai

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 (vu sach))) or (so sach)) ky nang tay hoi. hieu viec cac duc van lanh dao cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((su sach) OR (vu sach))) OR (so sach)) ky nang tay hoi. hieu viec cac duc van lanh dao cua triet.
• Adding a wildcard symbol may retrieve word variants: ((((su sach) or (vu sach))) or (so sach)) ky nang tay hoi. hieu viec cac duc van lanh dao cua triet*.