Perhaps you should try some spelling variations:
lang hai » lang chai, lang thai, lang ha
tu sach » thu sach, su sach, te sach
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hai cua » thai cua, dai cua, hoi cua
va lang » va nang, hoa lang
sach ty » sach y, sach tu, sach thu
va cam » va cham, va cac, va cao
ve cai » va cai, ve cac, ve tai
ve cam » ve cham, ve cac, ve cau
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 ty nang xa hoi. hieu ((((ve cam) OR (ve cai))) or (va cam)) duc va lang hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu ((((ve cam) OR (ve cai))) OR (va cam)) duc va lang hai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang xa hoi. hieu ((((ve cam) OR (ve cai))) or (va cam)) duc va lang hai cua te*".