Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
hanh vai » hanh vi, hanh va, hanh tai
thu tai » tru tai, thu hai, thuoc tai
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va hanh » van hanh, va thanh, va danh
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: ((thu tai) OR (tu tai)) ky lang xa hoi. hieu van pham duc va hanh vai ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu tai) OR (tu tai)) ky lang xa hoi. hieu van pham duc va hanh vai ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu tai) OR (tu tai)) ky lang xa hoi. hieu van pham duc va hanh vai ((cua te) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: ((thu tai) OR (tu tai)) ky lang xa hoi. hieu van pham duc va hanh vai ((cua te) or (cua tu))*.