Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
sach ky » sach y, sach kem, sach hay
han tai » hang tai, nhan tai, van tai
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
sac ky » cac ky, sai ky
tuc va » thuc va, truc va, tuc xa
va han » va phan, van han, va hanh
tai va » thai va, mai va, tri va
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: su ((((sach ky) or (sach ty))) or (sac ky)) nang xa hoi. hieu ve cham tuc va han tai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((((sach ky) OR (sach ty))) OR (sac ky)) nang xa hoi. hieu ve cham tuc va han tai va thiet.
• Adding a wildcard symbol may retrieve word variants: su ((((sach ky) or (sach ty))) or (sac ky)) nang xa hoi. hieu ve cham tuc va han tai va thiet*.