Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
xuc ban » duc ban, cuc ban, quoc ban
ban han » ban hang, ban hanh, ban than
tai cau » tai cac
tai cao » thai cao, tao cao, tai sao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (thuat lanh)) ky nang xa hoi. hieu van cam xuc ban han ((tai cau) OR (tai cao)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thuat lanh)) ky nang xa hoi. hieu van cam xuc ban han ((tai cau) OR (tai cao)) tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (thuat lanh)) ky nang xa hoi. hieu van cam xuc ban han ((tai cau) OR (tai cao)) tren".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thuat lanh)) ky nang xa hoi. hieu van cam xuc ban han ((tai cau) OR (tai cao)) tren*.