Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
cau tren » dau tren, ca tren, cau treo
sang tao » hang tai
va thanh » gia thanh, ban thanh, va tinh
cham tuc » nham thuc, pham thuc, tham thuc
cu tren » tu tren, dua tren
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
san ky » sang ky, van ky, dan ky
tuc va » thuc va, truc va, tuc xa
tu san » thu san, tu ban, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky ((sang tao) or (nang ma)) hoi. hieu ve cham tuc va thanh tai ((cau tren) OR (cu tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky ((sang tao) OR (nang ma)) hoi. hieu ve cham tuc va thanh tai ((cau tren) OR (cu tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky ((sang tao) or (nang ma)) hoi. hieu ve cham tuc va thanh tai ((cau tren) OR (cu tren))".
• Adding a wildcard symbol may retrieve word variants: tu san ky ((sang tao) or (nang ma)) hoi. hieu ve cham tuc va thanh tai ((cau tren) OR (cu tren))*.