Perhaps you should try some spelling variations:
nhiem nghe » nghiep nghe, hiem ngheo
nang mai » nang ma, nang tai, lang mai
nghe nam » nghe lam, nghiep nam, nghe nano
nam thuc » nam thuoc, am thuc, nam thu
vat hanh » vat thanh, van hanh, va hanh
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
luu tre » luu tru, cuu tre, luy tre
vi luu » vi lua

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 (thu hoach)) ky nang mai hoi. nhiem nghe nam thuc vat hanh vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu hoach)) ky nang mai hoi. nhiem nghe nam thuc vat hanh vi luu tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu hoach)) ky nang mai hoi. nhiem nghe nam thuc vat hanh vi luu tre*.