Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thuc van » thuc vat, thuc dan, thuc va
hieu van » hieu va, thien van, lieu va
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
su sach » so sach, vu sach
anh de » hanh de, anh d, anh du
anh ve » hanh ve, anh va, anh viet

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 ty nang xa hoi. ((hieu ve) or (hieu van)) am thuc van ((anh de) OR (anh ve)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. ((hieu ve) OR (hieu van)) am thuc van ((anh de) OR (anh ve)) cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. ((hieu ve) or (hieu van)) am thuc van ((anh de) OR (anh ve)) cua triet*".