Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
va doanh » van doanh, vay doanh, va danh
van bao » van ban, van dao
van cuu » van cau, van chu, van cu
truc va » thuc va, thuc vat, trung va
cuu tre » cua tre, cau tren, cau treo
sach ky » sach y, sach ty, sach kem
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
sac ky » cac ky, sai ky
van ba » van ban, van bac, van bau

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) OR (sac ky)) nang ma hoi. hieu ((van ba) or (van bao)) truc va doanh van cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sac ky)) nang ma hoi. hieu ((van ba) OR (van bao)) truc va doanh van cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) OR (sac ky)) nang ma hoi. hieu ((van ba) or (van bao)) truc va doanh van cuu tre*".