Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
dinh thai » dinh thi, sinh thai, tinh thai
cau thuc » cau truc, cuu thuc, can thuc
dinh hai » tinh hai, dinh ha, dinh tai
hieu van » hieu va, thien van, lieu va
thuc va » thuc vat, thuc dan, thuc day
su sach » vu sach
nang xa » nang x, lang xa, nang ma
so sach » so sanh, bo sach, co sach
van cau » van dau, van hau, van chat
y nang » ky nang, ly nang, v nang

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) or (so sach)) y nang xa hoi. hieu van cau thuc va ((dinh hai) OR (dinh thai)) cau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) y nang xa hoi. hieu van cau thuc va ((dinh hai) OR (dinh thai)) cau triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) y nang xa hoi. hieu van cau thuc va ((dinh hai) OR (dinh thai)) cau triet*".