Perhaps you should try some spelling variations:
hieu quan » lieu quan, thien quan, lien quan
tham nuoc » thay nuoc, thoat nuoc, nha nuoc
va hanh » van hanh, va thanh, va danh
va xanh » va danh, va anh, va banh
luu tre » luu tru, cuu tre, luy tre
lang ha » long ha
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
ha hoi » hoa hoi, ha noi, xa hoi
di luu » vi luu
te sac » te sach, te cac, te san

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 ky lang ha hoi. ((hieu quan) or (hieu qua)) tham nuoc ((va xanh) OR (va hanh)) di luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky lang ha hoi. ((hieu quan) OR (hieu qua)) tham nuoc ((va xanh) OR (va hanh)) di luu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky lang ha hoi. ((hieu quan) or (hieu qua)) tham nuoc ((va xanh) OR (va hanh)) di luu tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky lang ha hoi. ((hieu quan) or (hieu qua)) tham nuoc ((va xanh) OR (va hanh)) di luu tre*.