Perhaps you should try some spelling variations:
dau tren » dau tien, dat tren, dau tieng
hanh vai » hanh vi, hanh va, hanh tai
tang ma » mang may, tang van
vai dau » va dau, van dau, xvii dau
nang ma » sang ma, nang cao, mang may
va hanh » van hanh, va thanh, va danh
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
ve cam » ve cham, ve cac, ve cai

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 ((tang ma) or (nang ma)) hoi. hieu ((ve cam) or (va cam)) tuc va hanh vai dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky ((tang ma) OR (nang ma)) hoi. hieu ((ve cam) OR (va cam)) tuc va hanh vai dau tren.
• Adding a wildcard symbol may retrieve word variants: tu san ky ((tang ma) or (nang ma)) hoi. hieu ((ve cam) or (va cam)) tuc va hanh vai dau tren*.