Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
cham tuc » nham thuc, tham thuc, cham soc
hoc sach » hoc sinh, hoc cac, hoc anh
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
mat cua » manh cua, mang cua, nhat cua
va dan » ca dan, va dao, va dau
ma cua » ca cua, manh cua, mang cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ty nang x hoi. hieu ve ((cham tuc) OR (pham thuc)) va dan ((mat cua) or (ma cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ty nang x hoi. hieu ve ((cham tuc) OR (pham thuc)) va dan ((mat cua) OR (ma cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ty nang x hoi. hieu ve ((cham tuc) OR (pham thuc)) va dan ((mat cua) or (ma cua)) triet".
• Adding a wildcard symbol may retrieve word variants: hoc sach ty nang x hoi. hieu ve ((cham tuc) OR (pham thuc)) va dan ((mat cua) or (ma cua)) triet*.