Perhaps you should try some spelling variations:
tinh viec » tinh viet, dinh viec, sinh viec
cua triet » cua viet, su triet, va triet
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
va tinh » may tinh
tu sac » tu cac, tu san, tu bac
ma hoi » mai hoi, xa hoi, ma hoa
va nam » van nam, va nay
luc va » duc va, tuc va, loc va

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