Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec cac » vien cac, viec cua, viec lam
van hanh » van thanh, ban hanh, van anh
hanh tai » thanh tai, hang tai, han tai
nang ro » nang co, nang ho, nang ra
cac duc » cac du, cao duc, cac dac
duc van » duc va, duc tan, duc manh
tai cuu » tai cuc, tai buu, tai cua
cuu tre » cua tre, cau tren, cau treo
sac ky » cac ky, sai ky
ro hoi » co hoi, o hoi, mo hoi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sac ky) or (sach y)) nang ro hoi. hieu viec cac duc van hanh tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sac ky) OR (sach y)) nang ro hoi. hieu viec cac duc van hanh tai cuu tre.
• Adding a wildcard symbol may retrieve word variants: te ((sac ky) or (sach y)) nang ro hoi. hieu viec cac duc van hanh tai cuu tre*.