Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
ve triet » va trien, su triet
va triet » va thiet, va trien, cua triet
hanh vai » hanh vi, hanh va, hanh tai
cac thuc » cach thuc, cac thu, can thuc
viec cac » vien cac, viec cua, viec lam
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
vu sach » vu bach, vu khach
su sach » so sach

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 (vu sach)) ky lang xa hoi. hieu viec cac thuc va hanh vai ((va triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky lang xa hoi. hieu viec cac thuc va hanh vai ((va triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ky lang xa hoi. hieu viec cac thuc va hanh vai ((va triet) or (ve triet))*.