Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang hai » dang khai, hang hai, dung hai
hai cua » thai cua, dai cua, hoi cua
vuc van » duc van, luc van, thuc van
xuc van » duc van, luc van, xuc ban
te sach » toc sach
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang

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 ve chat ((xuc van) OR (vuc van)) dang hai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (v nang)) xa hoi. hieu ve chat ((xuc van) OR (vuc van)) dang hai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) or (v nang)) xa hoi. hieu ve chat ((xuc van) OR (vuc van)) dang hai cua triet*".