Perhaps you should try some spelling variations:
nhanh hai » nhanh thai, thanh hai, nhanh ha
cua triet » cua viet, su triet, va triet
kho tang » cao tang
hanh hai » thanh hai, hang hai, hanh tai
te sach » toc sach
hoa hoi » khoa hoi, hoa hoc, hoa doi
hieu ha » hieu hoa, hieu va, hieu ca
thu va » thuc va, thue va, tu va

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 ((kho tang) or (ky nang)) hoa hoi. hieu ha nam thu va ((hanh hai) OR (nhanh hai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((kho tang) OR (ky nang)) hoa hoi. hieu ha nam thu va ((hanh hai) OR (nhanh hai)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((kho tang) or (ky nang)) hoa hoi. hieu ha nam thu va ((hanh hai) OR (nhanh hai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((kho tang) or (ky nang)) hoa hoi. hieu ha nam thu va ((hanh hai) OR (nhanh hai)) cua triet*.