Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
hanh lam » thanh lap, hanh kem, hanh va
cau tren » cu tren, dau tren, ca tren
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
ty tang » tay tang, ty xang, ty hang
tang ma » mang may, tang van
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau treo
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: vu sach ty tang ma hoi. hieu vu cham duc va hanh lam ((cuu tre) OR (cau tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty tang ma hoi. hieu vu cham duc va hanh lam ((cuu tre) OR (cau tren))".
• Adding a wildcard symbol may retrieve word variants: vu sach ty tang ma hoi. hieu vu cham duc va hanh lam ((cuu tre) OR (cau tren))*.