Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cau treo » cau theo, cau tren, cau triet
van tham » van thanh, van tuan, van chat
tham soc » cham soc, tham nuoc, thai son
va hanh » van hanh, va thanh, va danh
ky lang » ky nang, ky dang, ky tang
van hoi » van hoa, van hoc, van loi
van hoe » van hoa, van hoc, van hieu
te dan » te danh, tre dan, ke dan
soc va » hoc va, loc va, doc va
dan ky » van ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te dan ky lang ((van hoi) OR (van hoe)). hieu van tham soc va hanh vi ((cau treo) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te dan ky lang ((van hoi) OR (van hoe)). hieu van tham soc va hanh vi ((cau treo) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te dan ky lang ((van hoi) OR (van hoe)). hieu van tham soc va hanh vi ((cau treo) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: te dan ky lang ((van hoi) OR (van hoe)). hieu van tham soc va hanh vi ((cau treo) or (cua te))*.