Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hieu van » hieu va, thien van, lieu va
van cam » van nam, van lam, van cau
va danh » va dinh, va dan, va hanh
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
cam tu » cam thu, nam tu, dam tu
ki su » ky su

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ky nang x ho. hieu van cam tu ((gia thanh) or (va danh)) ki su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang x ho. hieu van cam tu ((gia thanh) OR (va danh)) ki su triet.
• Adding a wildcard symbol may retrieve word variants: vu sac ky nang x ho. hieu van cam tu ((gia thanh) or (va danh)) ki su triet*.