Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
van chon » van cho, van choi, van chuong
hieu van » hieu va, thien van, lieu va
chon loc » cho hoc
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
hanh di » hanh vi, hanh de, danh di
hang di » hang doi, hang vi, hang dien
te sach » toc sach
loc va » hoc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y ((nang xa) or (lang xa)) hoi. hieu van chon loc va ((hanh di) OR (hang di)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang xa) OR (lang xa)) hoi. hieu van chon loc va ((hanh di) OR (hang di)) va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((nang xa) or (lang xa)) hoi. hieu van chon loc va ((hanh di) OR (hang di)) va triet".
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang xa) or (lang xa)) hoi. hieu van chon loc va ((hanh di) OR (hang di)) va triet*.