Perhaps you should try some spelling variations:
thoat nuoc » thuat nuoi
hieu quan » lieu quan, thien quan, lien quan
ban hanh » ban hang
va danh » va dinh, va dan, va hanh
luy tre » luyen tre
sac ky » cac ky, sai ky
vi luy » vi lua, vi luu
te sac » te sach, te cac, te san
x hoi » xa hoi, o hoi, x ho

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 nang x hoi. ((hieu quan) or (hieu qua)) thoat nuoc ((ban hanh) or (va danh)) vi luy tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang x hoi. ((hieu quan) OR (hieu qua)) thoat nuoc ((ban hanh) OR (va danh)) vi luy tre.
• Adding a wildcard symbol may retrieve word variants: te sac ky nang x hoi. ((hieu quan) or (hieu qua)) thoat nuoc ((ban hanh) or (va danh)) vi luy tre*.