Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van ban
tang tai » hang tai, dung tai, sang tao
cham xuc » cam xuc, chat xuc, cham soc
tu sach » thu sach, te sach, tu cach
van anh » van thanh, tuan anh, van minh
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
tai hoi » tai khoi, dai hoi, tai hai
su sach » so sach, vu sach
cua tuc » cua duc, cua tu, cua thuoc
y tang » ky tang, 6 tang, 7 tang
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) OR (su sach)) y tang tai hoi. hieu ve cham xuc ((van hanh) or (van anh)) vi cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) y tang tai hoi. hieu ve cham xuc ((van hanh) OR (van anh)) vi cua tuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) y tang tai hoi. hieu ve cham xuc ((van hanh) or (van anh)) vi cua tuc".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) y tang tai hoi. hieu ve cham xuc ((van hanh) or (van anh)) vi cua tuc*.