Perhaps you should try some spelling variations:
cham truc » cau truc, nham thuc, pham thuc
lam cua » nam cua, lam chat
va phan » van phan, va phat, va phap
truc va » thuc va, thuc vat, trung va
su cham » su pham, tu cham, vu cham
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
hoc hoi » hoc khoi, hoc hoa, hoc noi
ty nang » ky nang, ty xang, ty hang
hieu su » hieu sau, tieu su, hieu so
ho hoi » hoa hoi, hoi hoi, co hoi
ap cua » tap cua, gap cua, lap cua

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) or (hoc hoi)). hieu su cham truc va phan ((ap cua) or (lam cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ((ho hoi) OR (hoc hoi)). hieu su cham truc va phan ((ap cua) OR (lam cua)) triet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ((ho hoi) or (hoc hoi)). hieu su cham truc va phan ((ap cua) or (lam cua)) triet*.