Perhaps you should try some spelling variations:
nhieu vien » nhiet dien, thieu nien, nhien viet
nhieu viec » hieu viec, nhien viet
trinh he » trinh han, trinh hoa, trinh thi
va trinh » van trinh, va tinh, lap trinh
tu sach » thu sach, te sach, tu cach
cac duc » cac du, cao duc, cac dac
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
su sach » so sach, vu sach
ma hoi » mai hoi, xa hoi, ma hoa
he cua » le cua, hu cua, de cua

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 (su sach)) ky nang ma hoi. ((nhieu vien) or (nhieu viec)) cac duc va trinh he cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang ma hoi. ((nhieu vien) OR (nhieu viec)) cac duc va trinh he cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang ma hoi. ((nhieu vien) or (nhieu viec)) cac duc va trinh he cua tre*.