Perhaps you should try some spelling variations:
va thanh » ban thanh, va tinh, le thanh
te sach » toc sach
cam loc » cam lo
hai cuc » tai cuc, hai cua, thai cua
cuc tre » duc tre, cua tre, cuu tre
hieu ve » hieu va, hieu van
mau hoi » cau hoi, mai hoi, mau ho
ky dang » ky nang, ky danh
ky dong » ly dong, ky cong, ty dong
ve cam » ve cham, ve cac, va cam

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 ((ky dong) or (ky dang)) mau hoi. hieu ve cam loc ((va thanh) OR (gia thanh)) hai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky dong) OR (ky dang)) mau hoi. hieu ve cam loc ((va thanh) OR (gia thanh)) hai cuc tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky dong) or (ky dang)) mau hoi. hieu ve cam loc ((va thanh) OR (gia thanh)) hai cuc tre*".