Perhaps you should try some spelling variations:
thuc vatn » thuc van, thuc dan, thuc va
hoc quan » hoc dan, tac quan, hoc phan
thanh ve » hanh ve, thanh va, thanh vien
dang xay » dang van, van xay
quan ky » quan ly, quan y, xuan ky
hieu ve » hieu va, hieu van
lang xa » lang ha, lang van
ve cau » ke cau, va cau, ve cac
ve cua » le cua, de cua, te cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc quan ky ((lang xa) or (dang xay)) hoi. hieu ve cau ((thuc vatn) or (thuc vat)) thanh ve cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc quan ky ((lang xa) OR (dang xay)) hoi. hieu ve cau ((thuc vatn) OR (thuc vat)) thanh ve cua tu.
• Adding a wildcard symbol may retrieve word variants: hoc quan ky ((lang xa) or (dang xay)) hoi. hieu ve cau ((thuc vatn) or (thuc vat)) thanh ve cua tu*.