Perhaps you should try some spelling variations:
tinh viec » tinh viet, dinh viec, sinh viec
cua triet » cua viet, su triet, va triet
duoc may » duoc ma, hoc may, duoc lam
ky mang » ky nang, ke mang, ky dang
may hoi » may thoi, tay hoi, mai hoi
hieu va » hieu qua
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky

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