Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
cam thue » cam thu, lam thue, nam thue
tinh doi » trinh doc, trinh do, tinh hoc
dang xay » dang van, van xay
doi cua » dai cua, hoi cua
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu van
va tinh » may tinh
thue va » thuc va, thuyet va, thuc vat
hieu va » lieu va, hieu qua
te sai » te bai, te lai, te hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sai) or (te tai)) ky dang xay hoi. ((hieu ve) or (hieu va)) cam thue va tinh doi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sai) OR (te tai)) ky dang xay hoi. ((hieu ve) OR (hieu va)) cam thue va tinh doi cua viet.
• Adding a wildcard symbol may retrieve word variants: ((te sai) or (te tai)) ky dang xay hoi. ((hieu ve) or (hieu va)) cam thue va tinh doi cua viet*.