Perhaps you should try some spelling variations:
thoat nuoc » thuat nuoi
hieu quan » lieu quan, thien quan, lien quan
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
dang xay » dang van, van xay
luu tre » luu tru, cuu tre, luy tre
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
te san » te ban, ke san, tu san
vi luu » vi lua
te sac » te sach, te cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sac) or (te san)) ky dang xay hoi. ((hieu quan) or (hieu qua)) thoat nuoc va thanh vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te san)) ky dang xay hoi. ((hieu quan) OR (hieu qua)) thoat nuoc va thanh vi luu tre.
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (te san)) ky dang xay hoi. ((hieu quan) or (hieu qua)) thoat nuoc va thanh vi luu tre*.