Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
tap quan » tac quan, hai quan
nang so » nang som, nang co, nang ho
hieu va » lieu va, hieu qua
hau duc » huu duc, ha duc, phan duc
tap cua » tiep cua
su sai » su tai, su hai, su dai
sai ky » sac ky
so hoc » co hoc, mo hoc, so hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ky nang so hoc. hieu va ((hau duc) or (pham duc)) va thanh ((tap cua) or (tap quan)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky nang so hoc. hieu va ((hau duc) OR (pham duc)) va thanh ((tap cua) OR (tap quan)) triet.
• Adding a wildcard symbol may retrieve word variants: su sai ky nang so hoc. hieu va ((hau duc) or (pham duc)) va thanh ((tap cua) or (tap quan)) triet*.