Perhaps you should try some spelling variations:
sach tranh » canh tranh
tranh thuc » trinh thuc, trang thuc, thanh thuy
thuc hoach » thu hoach, thuc hanh, chuc hach
hoach hoa » hoach ha, hoach hoi, hoach toan
phu thong » pho thong, phap thong, khau thong
cach hoan » cac khoan, hach toan, sach han
sach dao » lanh dao
tue cach » tu cach, thuc cach, ve cach
vu sach » vu bach, su sach, vu khach
hoa phu » khoa phu, hoa phi, hoi phu
so sach » so sanh, bo sach, co sach
dao tue » dao tuc, dao tuyen, dao tuyet
hoan he » hoa he, toan he, hoan thue

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( vu sach tranh thuc hoach hoa phu thong ) or ( so sach dao tue cach hoan he thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( vu sach tranh thuc hoach hoa phu thong ) OR ( so sach dao tue cach hoan he thong )).
• Adding a wildcard symbol may retrieve word variants: (( vu sach tranh thuc hoach hoa phu thong ) or ( so sach dao tue cach hoan he thong ))*.