Perhaps you should try some spelling variations:
van cham » van chat, van tham, va cham
cham tuc » nham thuc, pham thuc, tham thuc
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
vu sach » vu bach, su sach, vu khach
cuu tre » cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » thuc va, truc va, tuc xa

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) OR (vu sach)) ky nang ma hoi. hieu van cham tuc va hanh vi ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (vu sach)) ky nang ma hoi. hieu van cham tuc va hanh vi ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (vu sach)) ky nang ma hoi. hieu van cham tuc va hanh vi ((cua tre) OR (cuu tre))*.