Perhaps you should try some spelling variations:
chat triet » chet triet, chat thien, cua triet
thanh lap » thanh san, phan lap, thanh hai
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
thuc va » thuc vat, thuc dan, thuc day
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
va cam » va cham, va cac, va cao
tuc va » truc va, tuc xa, duc va
phat » phan, pham, phap

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 ma hoi. lieu va cam ((tuc va) OR (thuc va)) thanh lap ((chat triet) or (phat trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoi. lieu va cam ((tuc va) OR (thuc va)) thanh lap ((chat triet) OR (phat trien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ma hoi. lieu va cam ((tuc va) OR (thuc va)) thanh lap ((chat triet) or (phat trien))".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoi. lieu va cam ((tuc va) OR (thuc va)) thanh lap ((chat triet) or (phat trien))*.