Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
thanh lai » thanh hai, thanh lap, thanh loi
va thanh » gia thanh, ban thanh, va tinh
cua tre » cua te, cuu tre, cua triet
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
ve cham » va cham, ve chat, vu cham
ve cam » ve cac, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang xa hoi. hieu ((ve cam) OR (ve cham)) thuc va thanh lai ((cua tre) or (cau triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu ((ve cam) OR (ve cham)) thuc va thanh lai ((cua tre) OR (cau triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang xa hoi. hieu ((ve cam) OR (ve cham)) thuc va thanh lai ((cua tre) or (cau triet))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu ((ve cam) OR (ve cham)) thuc va thanh lai ((cua tre) or (cau triet))*.