Perhaps you should try some spelling variations:
tinh viec » tinh viet, dinh viec, tich viec
sinh viec » sinh vien, dinh viec, ninh viet
van nang » van quang, van ban, van dong
su triet » su viet, su tien
ve triet » va trien
hieu van » hieu va, thien van, lieu va
nang ma » tang ma, sang ma, nang cao
luc va » duc va, tuc va, loc va
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang ma hoi. hieu van nang luc va ((tinh viec) or (sinh viec)) ((su triet) OR (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ma hoi. hieu van nang luc va ((tinh viec) OR (sinh viec)) ((su triet) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ma hoi. hieu van nang luc va ((tinh viec) or (sinh viec)) ((su triet) OR (ve triet))".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ma hoi. hieu van nang luc va ((tinh viec) or (sinh viec)) ((su triet) OR (ve triet))*.