Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
luoc van » luoc can, luoc va, luc van
cau luoc » cau luc, muu luoc, hau loc
hanh de » hanh ve, hanh kem
hieu ve » hieu va, hieu van
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky lang » ky nang, ky dang, ky tang
san ky » sang ky, van ky, dan ky
ve cau » ke cau, va cau, ve cac
ha hoi » ha noi, xa hoi, va hoi
te san » te ban, ke san, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te san ky lang ((ha hoi) OR (hoa hoi)). hieu ve cau luoc van ((hanh de) or (hanh vi)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te san ky lang ((ha hoi) OR (hoa hoi)). hieu ve cau luoc van ((hanh de) OR (hanh vi)) va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te san ky lang ((ha hoi) OR (hoa hoi)). hieu ve cau luoc van ((hanh de) or (hanh vi)) va triet".
• Adding a wildcard symbol may retrieve word variants: te san ky lang ((ha hoi) OR (hoa hoi)). hieu ve cau luoc van ((hanh de) or (hanh vi)) va triet*.