Perhaps you should try some spelling variations:
khai luoc » hai huoc, hai luom, dai luoc
nang mai » nang ma, nang tai, lang mai
hang dau » hang va, hang tai
thu tien » thuc tien, thu tieng, thuy tien
te sach » toc sach
sach ky » sac ky, sach y, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » hieu qua
luoc va » nuoc va, duoc va, loc va
va hang » van hang, va nang, va lang
dau thu » dau thau, dau tu, dat thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang mai hoi. ((hieu va) OR (lieu va)) khai luoc va hang dau thu tien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang mai hoi. ((hieu va) OR (lieu va)) khai luoc va hang dau thu tien".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang mai hoi. ((hieu va) OR (lieu va)) khai luoc va hang dau thu tien*.