Perhaps you should try some spelling variations:
van phat » va phat, van chat, van phan
thu nang » thi nang, thu bang, tho nang
hanh tai » thanh tai, hang tai, han tai
thu hang » thi hang, thuc hanh, thu huong
cao khoa » lao khoa, bao khoa, cac khoa
hanh vai » hanh vi, hanh va, hanh van
phat huu » pham huu, chat huu, phat huy
so sach » so sanh, bo sach, co sach
thi van » thi lan, thi hanh, thi nang
huu va » cuu va, tuu va
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: so sach ((thu nang) OR (thu hang)) cao khoa. thi van phat huu va ((hanh vai) or (hanh tai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((thu nang) OR (thu hang)) cao khoa. thi van phat huu va ((hanh vai) OR (hanh tai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((thu nang) OR (thu hang)) cao khoa. thi van phat huu va ((hanh vai) or (hanh tai)) cua te".
• Adding a wildcard symbol may retrieve word variants: so sach ((thu nang) OR (thu hang)) cao khoa. thi van phat huu va ((hanh vai) or (hanh tai)) cua te*.