Perhaps you should try some spelling variations:
cham truc » cau truc, nham thuc, pham thuc
phap thuc » phap thu, phap hoc, phap tu
van phan » van phong, van thanh, luan phan
phan tap » phan lap, han tap, pha tap
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang ho » nang hoc, nang co, tang ho
hieu su » hieu sau, tieu su, hieu so
ho hoi » hoc hoi, hoa hoi, hoi hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang ho hoi. hieu su ((cham truc) or (phap thuc)) van phan tap va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ho hoi. hieu su ((cham truc) OR (phap thuc)) van phan tap va triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ho hoi. hieu su ((cham truc) or (phap thuc)) van phan tap va triet*.