Perhaps you should try some spelling variations:
hang tai » hang va, dung tai
te sach » toc sach
tai cua » thai cua, tai cuc, tri cua
va hang » van hang, va nang, va lang
cao suc » cao su
cao duc » dao duc, giao duc, tao duoc
hieu va » lieu va, hieu qua
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
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 sach ((y nang) OR (v nang)) xa hoi. hieu va ((cao duc) or (cao suc)) va hang tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (v nang)) xa hoi. hieu va ((cao duc) OR (cao suc)) va hang tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (v nang)) xa hoi. hieu va ((cao duc) or (cao suc)) va hang tai cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) OR (v nang)) xa hoi. hieu va ((cao duc) or (cao suc)) va hang tai cua te*.