Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
cam qua » cau qua, cac qua, cay qua
cua tre » cua te, cuu tre, dua tren
qua ban » cua ban, qua quan
nang ma » tang ma, sang ma, nang cao
sach ty » sach tu, sach thu, xach tay
van cam » van nam, van lam, van cau
ma hoi » mai hoi, xa hoi, ma hoa

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

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