Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, pham thuc
cua triet » cua viet, su triet, va triet
nham thu » nam thu, pham thu, nhan thuc
phat lap » phan lap, phap lap, phat lam
tu sach » thu sach, su sach, te sach
nang ho » nang hoc, nang co, tang ho
hieu vu » hieu va, hieu ve, hieu su
lap cua » lai cua, tap cua, lam cua
y nang » ky nang, ly nang, v nang
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 y nang ho hoi. ((hieu vu) or (hieu qua)) ((nham thuc) or (nham thu)) va phat lap cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ho hoi. ((hieu vu) OR (hieu qua)) ((nham thuc) OR (nham thu)) va phat lap cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ho hoi. ((hieu vu) or (hieu qua)) ((nham thuc) or (nham thu)) va phat lap cua triet*.