Perhaps you should try some spelling variations:
thuat doanh » thuat toan, luat doanh, thuat lanh
doanh khoa » toan khoa
khap thong » phap thong, khau thong, khac thuong
khoa khap » khoa kham, khoa khac, kho khan
sach tren » sach tien, sach tranh
tren thuc » trien thuc, tron thuc, trinh thuc
thuc cach » thuoc sach, truoc cach, thuc hanh
hoach ki » hoach hoi, hoach toi, hoach su
ki thuat » ky thuat
thu sach » tu sach, thuat sach, thuoc sach
cach nha » sach nha, cac nha, cach pha
nha he » nha ha, nha h2, nha xe

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu hoach ki thuat doanh khoa khap thong ) or ( thu sach tren thuc cach nha he thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu hoach ki thuat doanh khoa khap thong ) OR ( thu sach tren thuc cach nha he thong )).
• Adding a wildcard symbol may retrieve word variants: (( thu hoach ki thuat doanh khoa khap thong ) or ( thu sach tren thuc cach nha he thong ))*.