Perhaps you should try some spelling variations:
hieu quan » lieu quan, thien quan, lien quan
tham loc » tham nuoc, cham soc, hau loc
lang hoa » hang hoa, lang ha, nang hoa
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
luy tre » luyen tre
cua tre » cua te, cuu tre, cua triet
ky lang » ky nang, ky dang, ky tang
hoa hoi » khoa hoi, hoa hoc, hoa doi
sac ky » cac ky, sai ky
loc va » hoc va, luc va
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 hoa hoi. ((hieu quan) or (hieu qua)) tham loc va thanh vi ((luy tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky lang hoa hoi. ((hieu quan) OR (hieu qua)) tham loc va thanh vi ((luy tre) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: te sac ky lang hoa hoi. ((hieu quan) or (hieu qua)) tham loc va thanh vi ((luy tre) or (cua tre))*.