Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
cua triet » cua viet, su triet, va triet
nang tao » nang cao, sang tao, nang tai
viec cac » vien cac, viec cua, viec lam
su sach » vu sach
so sach » so sanh, bo sach, co sach
tao hoi » tao khoi, tao boi, tay hoi
cac duc » cac du, cao duc, cac dac
duc ban » duc tan, duc van, dua ban
ban anh » ban hanh, ban banh, ban danh
anh dao » lanh dao, hanh dao, anh dat
dao cua » dai cua, day cua, dan cua

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