Perhaps you should try some spelling variations:
van cham » van tham, va cham, van pham
van chat » cao chat
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
nang ha » nang hai, nang han, nang hoa
soc van » hoc van, oc van, sac van
vai cua » dai cua, hai cua, lai cua
sac ky » sai ky
cua tu » cua tuc, cua su, cua cu

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 (cac ky)) nang ha noi. hieu ((van cham) OR (van chat)) soc van hanh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sac ky) OR (cac ky)) nang ha noi. hieu ((van cham) OR (van chat)) soc van hanh vai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sac ky) or (cac ky)) nang ha noi. hieu ((van cham) OR (van chat)) soc van hanh vai cua tu".
• Adding a wildcard symbol may retrieve word variants: su ((sac ky) or (cac ky)) nang ha noi. hieu ((van cham) OR (van chat)) soc van hanh vai cua tu*.