Perhaps you should try some spelling variations:
vat dung » van dung, va dung, viet dung
ve triet » su triet
va trien » va truyen, va tuyen, va tieng
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
cac hoc » cach hoc, cac hop, bac hoc
hoc vat » hoc va, hoc viet, thuc vat
su xac » pu xac, su cac
xac ky » cac ky, sac ky, bac ky
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 xac ky lang xa hoi. lieu va cac hoc vat dung tai ((ve triet) or (((va trien) or (va thiet))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su xac ky lang xa hoi. lieu va cac hoc vat dung tai ((ve triet) OR (((va trien) OR (va thiet)))).
• Adding a wildcard symbol may retrieve word variants: su xac ky lang xa hoi. lieu va cac hoc vat dung tai ((ve triet) or (((va trien) or (va thiet))))*.