Perhaps you should try some spelling variations:
tang lai » trang lai, tang tai, mang lai
tang loi » thang loi, hang loi, thanh loi
van hanh » van thanh, ban hanh, van anh
hieu va » lieu va, hieu qua
tu sach » thu sach, su sach, te sach
va chao » va cao, va chat, va cham
vi cua » vai cua, di cua
xu van » tu van, vu van, su van
tu sac » tu cac, tu san, tu bac
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: ((tu sac) or (tu sach)) ky ((tang lai) or (tang loi)) hoi. hieu va chao xu van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu sach)) ky ((tang lai) OR (tang loi)) hoi. hieu va chao xu van hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu sach)) ky ((tang lai) or (tang loi)) hoi. hieu va chao xu van hanh vi cua te*.