Perhaps you should try some spelling variations:
sach tham » sach nha
hanh dam » thanh dam, hanh lam, hanh nam
sach thu » sach thue, sach thieu, cach thuc
va triet » va thiet, va trien, ve triet
hanh lu » hanh tu, hanh xu, hanh su
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
lu hoi » le hoi, luat hoi
tuc va » truc va, tuc xa, duc va
dam va » dam van, nam va, dam ha
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach thu) or (sach tham)) hanh lu hoi. hieu ve cam ((tuc va) or (thuc va)) hanh dam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach thu) OR (sach tham)) hanh lu hoi. hieu ve cam ((tuc va) OR (thuc va)) hanh dam va triet.
• Adding a wildcard symbol may retrieve word variants: thu ((sach thu) or (sach tham)) hanh lu hoi. hieu ve cam ((tuc va) or (thuc va)) hanh dam va triet*.