Perhaps you should try some spelling variations:
sach trien » sach tien, sach tren, sach thieu
trien hanh » trien thanh, tien hanh, thien thanh
manh trong » manh truong, anh trong, manh trung
trong hanh » trong thanh, trong anh, trong canh
cac khoin » cac khoan, cac khoi, cac thoi
khoin pho » khoi tho
pho thong » he thong
hanh cach » hanh sach, tinh cach, nhan cach
cach khoa » bach khoa, cac khoa, cac khoan
hanh cac » hang cac, hanh cat, nhanh cay
khoa noi » khoa doi, khoa hoi, khoan nhoi
noi tong » noi cong, nuoi trong, noi tieng
te sach » toc sach
tu manh » tu minh, tu hanh, vu manh

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 trien hanh cac khoin pho thong ) or ( tu manh trong hanh cach khoa noi tong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach trien hanh cac khoin pho thong ) OR ( tu manh trong hanh cach khoa noi tong )).
• Adding a wildcard symbol may retrieve word variants: (( te sach trien hanh cac khoin pho thong ) or ( tu manh trong hanh cach khoa noi tong ))*.