Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, pham thuc
nham thu » nam thu, pham thu, nhan thuc
tap cua » tap quan, tiep cua
lap cua » lai cua, lam cua, ap cua
va phan » van phan, va phat, va phap
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
hieu vu » hieu va, hieu ve, hieu su
nang ho » nang hoc, nang co, tang ho
ty nang » ky nang, ty xang, ty hang
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: su sach ty nang ho hoi. hieu vu ((nham thu) OR (nham thuc)) va phan ((lap cua) or (tap cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ho hoi. hieu vu ((nham thu) OR (nham thuc)) va phan ((lap cua) OR (tap cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang ho hoi. hieu vu ((nham thu) OR (nham thuc)) va phan ((lap cua) or (tap cua)) triet".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ho hoi. hieu vu ((nham thu) OR (nham thuc)) va phan ((lap cua) or (tap cua)) triet*.