Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nham thuc » nhan thuc, nam thuc, nham thu
phat lap » phan lap, phap lap, phat lam
nang hoc » nang doc, nang luc, dong hoc
hieu va » lieu va, hieu qua
lap cua » lai cua, tap cua, lam cua
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
nang ho » nang co, tang ho, nang cao
hieu vu » hieu ve, hieu su, dieu vu

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) OR (nang hoc)) hoi. ((hieu vu) or (hieu va)) nham thuc va phat lap cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((nang ho) OR (nang hoc)) hoi. ((hieu vu) OR (hieu va)) nham thuc va phat lap cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((nang ho) OR (nang hoc)) hoi. ((hieu vu) or (hieu va)) nham thuc va phat lap cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((nang ho) OR (nang hoc)) hoi. ((hieu vu) or (hieu va)) nham thuc va phat lap cua triet*.