Perhaps you should try some spelling variations:
doanh moi » doanh tai, dinh moi, thanh moi
hanh vii » hanh voi, hanh va, hanh noi
danh mai » danh sai, dinh moi, bach mai
cham tuc » nham thuc, pham thuc, tham thuc
tu sach » thu sach, su sach, te sach
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
sach ty » sach y, sach tu, sach thu
tu tren » tu truyen, tu tieng, tu trong
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 ty ((danh mai) or (doanh moi)) hoi. hieu vu cham tuc va ((hanh vii) or (hanh vi)) tu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((danh mai) OR (doanh moi)) hoi. hieu vu cham tuc va ((hanh vii) OR (hanh vi)) tu tren.
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((danh mai) or (doanh moi)) hoi. hieu vu cham tuc va ((hanh vii) or (hanh vi)) tu tren*.