Perhaps you should try some spelling variations:
tay lang » tai lang, tay quang, tham lang
tay tang » tay trung, tay quang, tay tieng
cam truc » cau truc, nam truc, lam truoc
tu sach » thu sach, su sach, te sach
dan hai » doan hai, dang hai, dan khai
cua tre » cuu tre, cua triet, dua tren
hieu va » lieu va, hieu qua
truc va » thuc va, thuc vat, trung va
va cam » va cham, va cac, va cao
va dan » ca dan, va dao, va dau
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 sach ((tay lang) or (tay tang)) xa hoi. hieu va cam truc va dan hai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tay lang) OR (tay tang)) xa hoi. hieu va cam truc va dan hai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((tay lang) or (tay tang)) xa hoi. hieu va cam truc va dan hai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach ((tay lang) or (tay tang)) xa hoi. hieu va cam truc va dan hai ((cua tre) OR (cua te))*.