Perhaps you should try some spelling variations:
tham tuc » tham thuc, thai tuc, nham thuc
hanh tai » thanh tai, hang tai, han tai
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
va tham » van tham, va cham, va thanh
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
tuc va » thuc va, truc va, tuc xa
te cac » ve cac, te cao, de cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te cac) OR (tu cac)) ky lang xa hoi. hieu va tham tuc va hanh tai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te cac) OR (tu cac)) ky lang xa hoi. hieu va tham tuc va hanh tai ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te cac) OR (tu cac)) ky lang xa hoi. hieu va tham tuc va hanh tai ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((te cac) OR (tu cac)) ky lang xa hoi. hieu va tham tuc va hanh tai ((cua tre) or (cuu tre))*.