Perhaps you should try some spelling variations:
nhieu vien » nhieu viec, nhiet dien, thieu nien
trinh ve » trinh he, trinh va, trinh vi
va trinh » van trinh, va tinh, lap trinh
vien cac » vien bach, vien dai, vien da
thu sach » tu sach, thuat sach, thuoc sach
nang ma » tang ma, sang ma, nang cao
cac duc » cac du, cao duc, cac dac
su sach » so sach, vu sach
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa
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: ((thu sach) or (su sach)) ky nang ma hoi. nhieu vien cac duc va trinh ve ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (su sach)) ky nang ma hoi. nhieu vien cac duc va trinh ve ((cuu tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (su sach)) ky nang ma hoi. nhieu vien cac duc va trinh ve ((cuu tre) or (cua te))*.