Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van chat » cao chat
chat tu » nhat tu, chai tu, chay tu
va tinh » may tinh
va danh » va dinh, va dan, va hanh
su tien » su kien, tu tieng, dau tien
su hien » su kien, thu hien, nhu hien
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky

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 chat tu ((va tinh) or (va danh)) ki ((su tien) or (su hien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang x ho. hieu van chat tu ((va tinh) OR (va danh)) ki ((su tien) OR (su hien)).
• Adding a wildcard symbol may retrieve word variants: vu sac ky nang x ho. hieu van chat tu ((va tinh) or (va danh)) ki ((su tien) or (su hien))*.