Perhaps you should try some spelling variations:
la thiet » va thiet, ly thiet, luan thiet
cam tuc » cam xuc, cam tu, nam thuc
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
tuc va » thuc va, truc va, tuc xa
va dan » ca dan, va dao, va dau
dan gi » dan gia, dan li, dan gian
gi la » gi lam, gia la, gio la

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 ty) or (sac ky)) nang xa hoi. ((hieu ve) or (hieu qua)) cam tuc va dan gi la thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sac ky)) nang xa hoi. ((hieu ve) OR (hieu qua)) cam tuc va dan gi la thiet.
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sac ky)) nang xa hoi. ((hieu ve) or (hieu qua)) cam tuc va dan gi la thiet*.