Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
hanh dam » thanh dam, hanh lam, hanh nam
sach tai » sach bai, sach tham, sach dao
sach thi » sach thu, sach thieu, sach tham
hanh xa » hanh va, hanh xu, canh xa
va hanh » van hanh, va thanh, va danh
hanh ma » hanh mau, hanh may, hanh va
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
tuc va » thuc va, truc va, tuc xa
dam va » dam van, nam va, dam ha
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach thi) OR (sach tai)) ((hanh xa) or (hanh ma)) hoi. hieu ve cham tuc va hanh dam va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach thi) OR (sach tai)) ((hanh xa) OR (hanh ma)) hoi. hieu ve cham tuc va hanh dam va thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach thi) OR (sach tai)) ((hanh xa) or (hanh ma)) hoi. hieu ve cham tuc va hanh dam va thiet".
• Adding a wildcard symbol may retrieve word variants: te ((sach thi) OR (sach tai)) ((hanh xa) or (hanh ma)) hoi. hieu ve cham tuc va hanh dam va thiet*.