Perhaps you should try some spelling variations:
khong xuong » khong dung, hong vuong, thong duong
thieu tach » thien hach, chiet tach, chieu sach
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
xuong dan » huong dan, xuong san, tuong dan
chan nan » chan nhan, chang nang, chai nang
doan » doanh, toan, soan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu tach - thanh ((trung cua) or (trung cap)) khong xuong dan ((chan nan) or (chan doan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tach - thanh ((trung cua) OR (trung cap)) khong xuong dan ((chan nan) OR (chan doan)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu tach - thanh ((trung cua) or (trung cap)) khong xuong dan ((chan nan) or (chan doan))*.