Perhaps you should try some spelling variations:
ve triet » va trien, su triet
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
dan bac » dan ba, van bac, dong bac
van hac » van hoc, van ha, van hai
sach ty » sach y, sach tu, sach thu
truc va » thuc va, thuc vat, trung va
danh di » xanh di, danh dien, danh gia
danh du » danh dau, danh tu, dinh du
tu sach » thu sach, su sach, te sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang xa hoi. hieu ((dan bac) or (van hac)) truc va ((danh di) or (danh du)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu ((dan bac) OR (van hac)) truc va ((danh di) OR (danh du)) ve triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu ((dan bac) or (van hac)) truc va ((danh di) or (danh du)) ve triet*.