Perhaps you should try some spelling variations:
thanh tri » thanh tra, thanh tai, chinh tri
cua triet » su triet, va triet
nang van » dang van, tang van, lang van
cua viet » ca viet, hoa viet, cua vat
sach ky » sach y, sach ty, sach kem
van hoc » van hoa
hieu va » lieu va, hieu qua
cam loc » cam lo
loc gia » luoc gia, toc gia, hoc gia
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao

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 ky) OR (sac ky)) nang van hoc. hieu va cam loc gia thanh tri ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sac ky)) nang van hoc. hieu va cam loc gia thanh tri ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) OR (sac ky)) nang van hoc. hieu va cam loc gia thanh tri ((cua triet) or (cua viet))".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) OR (sac ky)) nang van hoc. hieu va cam loc gia thanh tri ((cua triet) or (cua viet))*.