Perhaps you should try some spelling variations:
khong trong » khoang trong, thong trong, phong trong
dieu tinh » diep tinh, lieu tinh, dien tinh
trung hua » trung hoa, trung cua, trung huy
trong ban » trong san, trong tan, trong quan
hoc dieu » hoc thieu, hoc hien
trung ha » trung hoc, trung tam, trung cap
phan cau » phan dau, phan cac, 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 tinh - thanh ((trung hua) or (trung ha)) khong trong ban ((phan cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dieu tinh - thanh ((trung hua) OR (trung ha)) khong trong ban ((phan cau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: hoc dieu tinh - thanh ((trung hua) or (trung ha)) khong trong ban ((phan cau) or (phan tu))*.