Perhaps you should try some spelling variations:
thi hang » thi hanh, thi nang, thi thanh
thi hong » thi cong, thi phuong, thi hanh
cham tuc » nham thuc, pham thuc, tham thuc
hanh vai » hanh vi, hanh va, hanh tai
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
va hanh » van hanh, va thanh, va danh
tuc va » thuc va, truc va, tuc xa
vai su » va su, van su, lai su

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((thi hang) or (thi hong)) xa hoi. hieu vu cham tuc va hanh vai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((thi hang) OR (thi hong)) xa hoi. hieu vu cham tuc va hanh vai su triet.
• Adding a wildcard symbol may retrieve word variants: su sach ((thi hang) or (thi hong)) xa hoi. hieu vu cham tuc va hanh vai su triet*.