Perhaps you should try some spelling variations:
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cam duc » cam xuc, pham duc, nam duoc
cao duc » dao duc, cao suc, giao duc
cuu tre » cua tre, cau tren, cau treo
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
va dao » ca dao
dao vi » dao voi, dao ve, dao va
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky ((nang x) or (lang xa)) hoi. hieu ve ((cam duc) or (cao duc)) va dao vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((nang x) OR (lang xa)) hoi. hieu ve ((cam duc) OR (cao duc)) va dao vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((nang x) or (lang xa)) hoi. hieu ve ((cam duc) or (cao duc)) va dao vi cuu tre*.