Perhaps you should try some spelling variations:
truong cao » truong dai
nhung cong » dung cong, thong cong, hang cong
hoc chinh » hoan chinh, hoc sinh
truong va » truong dai, truong dao, luong va
hoc kinh » hoc sinh, luoc kinh
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chinh) or (hoc kinh)) sach - thanh ((truong va) OR (truong cao)) nhung cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chinh) OR (hoc kinh)) sach - thanh ((truong va) OR (truong cao)) nhung cong tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chinh) or (hoc kinh)) sach - thanh ((truong va) OR (truong cao)) nhung cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc chinh) or (hoc kinh)) sach - thanh ((truong va) OR (truong cao)) nhung cong tan toan cao*.