Perhaps you should try some spelling variations:
bach khoa » anh khoa
sach kho » sach dao, sach nha, sach kem
trinh vi » trinh va, trinh ve, trinh viet
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cua triet, dua tren
loc lap » doc lap, hoc lap, logic lap
van hac » van hoc, van ha, van hai
hac loc » hau loc, thac toc
tang xa » trang xa, tang ma, lang xa
cuu tre » cau tren, cau treo

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 kho) or (bach khoa)) tang xa hoi. hieu van hac loc lap trinh vi ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach kho) OR (bach khoa)) tang xa hoi. hieu van hac loc lap trinh vi ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach kho) or (bach khoa)) tang xa hoi. hieu van hac loc lap trinh vi ((cua tre) OR (cuu tre))*".