Perhaps you should try some spelling variations:
lang chai » lang ha, lang cua, lang phi
nang cham » trang cham, nang cao, nang phat
cham hoi » cham voi, cham h'roi, pham hoai
hieu van » hieu va, thien van, lieu va
tan lang » tai lang, ban lang, lan lang
van cac » van hac, van cau, van bac
cac duc » cac du, cao duc, cac dac
chai va » chat va, thai va, hai va
su cac » tu cac, su cao, su can
tu can » tu ban, tu cac, thu canh
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su cac) or (tu can)) ky nang cham hoi. hieu van cac duc tan lang chai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cac) OR (tu can)) ky nang cham hoi. hieu van cac duc tan lang chai va thiet.
• Adding a wildcard symbol may retrieve word variants: ((su cac) or (tu can)) ky nang cham hoi. hieu van cac duc tan lang chai va thiet*.