Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
va triet » va thiet, va trien, ve triet
hanh dam » thanh dam, hanh lam, hanh nam
cham tuc » nham thuc, pham thuc, cham soc
sach tai » sach bai, sach tham, sach dao
hieu van » hieu va, thien van, lieu va
hanh xa » hanh va, hanh xu, canh xa
hanh ma » hanh mau, hanh may, hanh va
va hanh » van hanh, va thanh, va danh
te sach » toc sach
dam va » dam van, nam va, dam ha

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