Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hanh vai » hanh vi, hanh va, hanh tai
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
cham lo » cham o, cham soc, cham hoi
hieu va » lieu va, hieu qua
tang ma » tang van
sach 6 » sach y, sach 2
cam lo » nam lo, cam ly, cam o
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach 6 ((tang ma) OR (mang may)) hoi. hieu va ((cham lo) or (cam lo)) va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach 6 ((tang ma) OR (mang may)) hoi. hieu va ((cham lo) OR (cam lo)) va hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach 6 ((tang ma) OR (mang may)) hoi. hieu va ((cham lo) or (cam lo)) va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: thuat sach 6 ((tang ma) OR (mang may)) hoi. hieu va ((cham lo) or (cam lo)) va hanh vai cua te*.