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
va triet » va thiet, va trien, ve triet
sach ky » sach y, sach ty, sach kem
lang xa » lang ha, dang xay, lang van
cac tac » cac toc, cac bac, cac dac
tac van » tac vang, cac van, tac va
sac ky » cac ky, sai ky
vi va » vi van, vai va, vu va

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 ky) OR (sac ky)) lang xa hoi. hieu viec cac tac van hanh vi va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ky) OR (sac ky)) lang xa hoi. hieu viec cac tac van hanh vi va triet".
• Adding a wildcard symbol may retrieve word variants: su ((sach ky) OR (sac ky)) lang xa hoi. hieu viec cac tac van hanh vi va triet*.