Perhaps you should try some spelling variations:
tuong cua » truong cua, huong cua, thong cua
hang cong » dang cong, hang nong, bang cong
hoc hieu » hoc thieu, hoc hien, doc hieu
tung cua » trung cua, dung cua, tang cua
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap
hieu va » lieu va, hieu qua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu va - thanh ((tung cua) or (tuong cua)) hang cong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu va - thanh ((tung cua) OR (tuong cua)) hang cong dan than tap*.