Perhaps you should try some spelling variations:
ve triet » va trien, su triet
van hanh » van thanh, ban hanh, van anh
hanh ke » hanh kem, thanh ke, hanh ky
duc van » duc va, duc tan, duc manh
nang ma » sang ma, nang cao, mang may
cam duc » cam xuc, cao duc, pham duc
tang ma » mang may, tang van
va cam » va cham, va cac, va cao
sac ky » cac ky, sai ky
ke ve » ke va, ke he, de ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sac ky) or (sach y)) ((nang ma) or (tang ma)) hoi. lieu va cam duc van hanh ke ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sac ky) OR (sach y)) ((nang ma) OR (tang ma)) hoi. lieu va cam duc van hanh ke ve triet.
• Adding a wildcard symbol may retrieve word variants: su ((sac ky) or (sach y)) ((nang ma) or (tang ma)) hoi. lieu va cam duc van hanh ke ve triet*.