Perhaps you should try some spelling variations:
trung cao » truong cao, trung co, trung ca
trung cap » truong cao, trung tam
tang cong » tang cuong, trang cong, dang cong
hoc dieu » hoc thieu
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan cac » nhan cach, phan dau, phan lap

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

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